Adjustable height terrace pedestals
Adjustment from 17 to 420 mm
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Tarasy kompozytowe i rozsączanie wody
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How to use adjustable pedestals?

Adjustable pedestals, support and modular pads, rubber pads for terrace tiles and joists: A complete guide to roof pedestal system for raised and ventilated terraces.

Józef Baar
Józef Baar
Product manager
A complete guide to raised and ventilated terraces

Guide to roof pedestal system for raised and ventilated terraces - introduction.

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Leveling terraces on adjustable pedestals innovative technology for making terraces.

Everyone who has ever made outdoor floors has encountered the problem: uneven ground levels. This topic is important not only because of the drainage of water from the surface of the ground and terrace. Often this problem is overlooked in the workmanship and eventually the sloping floor is leveled in a random and ineffective way. 

The ideal solution is a horizontally laid floor, keeping the ground under the floor in a slope consistent for the drainage of rain. Floors laid horizontally are characteristic of surfaces laid inside buildings. However, would it not be comfortable to use the floor horizontally laid also outside?  The roof pedestal system helps you do this. The human eye and labyrinth are so sensitive that they can sense even the slightest tilt and unevenness of the floor. 

Therefore, for outdoor terrace floors, you need an element that will raise the final floor / terrace to the appropriate height and cause that the upper surface of the terrace floor will be horizontally or with a very slight slope. This element is a support for terraces. Below is a diagram which presents the essence of a raised ventilated terrace on adjustable plastic pedestals.
"Since the ground differs in height between harvests and the lowest - the place where rainwater drains from the terrace, the base must be able to adjust the height so that the terrace surface remains horizontal.

We also distinguish stands without height levels. Washers for fixed height panels that function as spacers to set the gap between panels and act to distance panels from load that do not have aesthetic features, e.g. roofing felt. In this way, a floating floor is laid - a ventilated terrace, otherwise a raised terrace. Structure of the adjustable pedestals: the base of the pedestals is set on the terrace floor, the ring that gives the height adjustable pedestal, the upper part of the terrace pedestal on which the terrace floor is supported. An additional upper part compatible with the finish is an element that helps on the installation of the final terrace floor e.g. tiles or joists."

Leveling terraces on adjustable pedestals - a new solution, but known for a long time.

Although the use of adjustable pedestals for terrace construction is innovative in modern construction, compatible roof pedestal systems for the installation of raised floors are still being improved. In ancient times, solutions for raising floors to the ground were known. 

An example is, for example, Roman baths, in which floor tiles were laid, supported by smaller tiles stacked so as to raise the floor up. The purpose of this floor lifting was to allow warm air to enter under the floor in thermal baths and thus achieve underfloor heating.

Basic information about the technology and benefits of ventilated floors and terraces.

Why can terrace adjustable pedestals be the solution for you?

Possible that :

  • you design your dream house with a terrace
  • you design your apartment with a balcony
  • You plan to renovate the old terrace in the spring
  • installing terraces for customers
  • you work in the construction industry related to roofs, facades and terraces
  • you set up green gardens on the roofs
  • you provide modern solutions and products from the construction industry for your clients

In each of the above cases and not only it may turn out that raising and leveling terraces on supports is just for you. You will see the opportunity to solve the obstacles that will appear on the planned implementation of the terrace. Terrace adjustable pedestals will help you and your customers.

  • Professional, safe, simple, durable terrace leveling terrace floor height e.g. relative to the floor inside the house or apartment you need, it is possible to connect the apartment with the terrace without a threshold
  • waterproofing protection against damage you don't stick, you don't have to anchor to the ground
  • you stack media, water, gas etc. safely and without collision under the terrace
  • you build a terrace regardless of the fall of the ground
  • easy disassembly in the event of a terrace inspection
  • ventilation, limitation of humidity under the terrace
  • adjustable pedestals are a light weight for a leveled floor in relation to the height to be covered
  • adjustable pedestals are the use of simple assembly solutions
  • leveled terraces on plastic pedestals are safe,
  • adjustable pedestals correctly mounted do not shift on the leveled floor surface under the terrace,
  • adjustable pedestals are not biodegradable,
  • adjustable pedestals are resistant to changes in ambient temperature
  • adjustable pedestals are resistant to ice under the terrace

Destruction and damage to the old terrace - when the terrace needs renovation.

Where you can use spacers for terrace tiles. A universal solution for each terrace.

Outdoor floors - what is this?

Balconies, terraces, terrace stairs, wooden and composite decking, ceramic tiles, relaxing terraces, garden terraces, observation terraces, city fountains, garden fountains, interactive fountains, footbridges, recreational squares, playgrounds, outdoor company exhibitions, entrances / exits from buildings, leisure patios in or between buildings, roof terraces of buildings, green terraces, inverted terraces. Exterior floors are surfaces placed outside buildings, exposed to changing weather conditions, humidity, changing sunlight and temperatures depending on the season.

When will I know that I should use pedestals or spacers for tiles and joists?

Always when there is a need to level the external surfaces of terraces and balconies.

You plan to level the terrace with the floor inside the building.

You plan to raise the terrace to a height and do it professionally, simply, safely and permanently

You plan to install concrete tiles, ceramic tiles, wooden boards, 
composite boards, ceramic boards and you want them to not slide apart or collapse in the future

You cannot load the ground with a too heavy leveling structure.

You used a membrane against moisture penetration,

Hydroisolation on the terrace which cannot be damaged.

 You are planning media installation under the terrace.

Are you planning a new terrace and do not know if you can use terrace adjustable pedestals?

The use of leveling plastic pedestals and the ground for the terrace, the correct ground for the terrace, the ground for the terrace must be even and stable. This means that you cannot lay the terrace directly on unprepared e.g. clay soil, sod, grass or moss, not hardened, which after the first rain will erode and the terrace will begin to deform or collapse. 

The adjustable pedestals will not stand steady, neither on grass nor on stones or debris. The quality of the substrate under the terrace translates directly into the quality of terrace use. The stability of the substrate for the terrace is the most important element.
Terrace height - the terrace height is another very important parameter. 

The height from the planned ground to the entrance to the building may be too small to set a adjustable pedestals, and on it you must additionally take into account, add the height of the planned slab, joist or plank. Know the height of the leveling plastic pedestals, check whether the height of the adjustablepedestals will raise your terrace to height, which you have to overcome. Remember that the leveling lastic pedestals have different heights, the adjustable pedestals can be extended with a screw-in sleeve in the base.

Installation of raised terraces. Planning a raised terrace familiarize yourself with the technology of raised terraces the construction of raised terraces is proven, trouble-free, trouble-free and simple.
Price of adjustable pedestals - you plan to raise the height of the ground and level its slopes and possible unevenness in other ways, then calculate the prices. If the price of the leveling plastic pedestals seems too high for you, first calculate all the costs that you will be forced to spend to level the terrace without using them. also inconvenience associated with the planned installation, and in the future the possibility of defects on terraces and balconies leveled by traditional methods. 

Confront all the pros and cons with the advantages of innovative technology for the construction and installation of raised terraces, and you will quickly return to the plan of their application.

Style for the terrace

Terrace or balcony?

Porch, winter garden, semi-open terrace, garden shed with awning, leveled on adjustable pedestals.

Private houses, flats.

Roof terrace and terrace outside the building.

Developer residential.


Public spaces and squares.

Terraces and balconies are built by people on all continents. Everyone likes to relax outside the building in the garden, park, hotel, swimming pools, where terraces are an important attraction, as well as in their own home, apartment, holiday home. 

In any climate and at any time of the year in us we need to breathe outside the building, the desire to be in space where the sun, wind arrives, the opportunity to rest, calm outside the building in our own comfort zone. 

DD Pedestals adjustable pedestals can be used wherever day and night temperatures remain within the temperature range declared by the product manufacturer and you can feel safe. Your balcony, terrace, loggia, patio, green roof has received trouble-free support for a long time.

Seasonality of terrace use.


Temperatures throughout the year on your terrace.

temperaturelow temperature
If you want to know the costs of terrace leveling on a planned investment or construction, read the price list of products that will help you estimate the cost, and in case of doubt send an email with the design or drawing of the planned terrace or call a consultant who will choose the right product and prepare a price offer including transport cost to the construction site. 

We sell to retail customers in Poland through the Libet company, whose consultants trained in the construction of terraces on adjustable pedestals, will lead you collision-free through technical topics and help you choose products that are properly selected for investment and finally make purchases.
The costs of installing a ventilated terrace raised on adjustable pedestals made of ceramic plates, depending on the size and complexity of the terrace, can range from about PLN 50 per square meter to PLN 100 per square meter.

The costs of installing a ventilated terrace raised on supports made of planks and joists can cost from about PLN 70 to even PLN 100 per square meter.

Materials for building a terrace on adjustable plastic pedestals?

Taking the terrace thickness into account when designing.

Ventilated terrace tiles laid on terrace supports.

Is it possible to lay panels on adjustable pedestals?

Yes. Laying the panels on the adjustable pedestals is the best possible installation system. 

It protects the floor surface on which the terrace is mounted, levels building irregularities, allows invisible routing of all necessary media under the terrace, which can be easily accessed at any time. 

Levels the terrace to the desired height, and thanks to air ventilation keeps all terrace and ground elements as well as the substructure in optimal humidity.

Is the surface of the terrace tiles slippery?

Please remember that any surface covered with water may be slippery. This applies to any type of floor, including certainly boards. 

Terrace boards and ceramic tiles have appropriate certificates related to anti-slip, but remember that outdoor terraces exposed to changing humidity conditions, falling dust and other pollution under the influence of water, such as roadways on which cars move, may show an increased tendency to slip.

Is the water standing on the terrace tiles

Dirt on the terrace.

Can the plates crack when they are laying on adjustable pedestals?

What gap between the terrace tiles?

Adjustable pedestals have special spacers. joint spacers, which determine the width of the joint depending on the size selection of a given spacer joint spacers for adjustable pedestals are available in two sizes 3 mm and 5 mm. 

They can be attached to the support pads system in the holes of the pedestal head of the DD Pedestals SPIRAL, STANDARD, MAX series. Plugging directly into the plastic pedestals allows you to determine the width of the joints between the tiles during their leveling and installation. 

Properly leveling support pads ensures consistent joints between the mounted tiles. Leveling technology using DD Pedestals adjustable pedestals, you can use interchangeable spacers 5 mm or 3 mm.

 A similar solution is also a 3 mm and 5 mm joint disc that serves as a distance to obtain even gaps, also attached to the hat, but only available in the SPIRAL and MAX series of adjustable pedestals. An additional product that allows you to create an accurate and aesthetic gap between the terrace floor and the edge is the expansion joint from the wall, e.g. at the wall, the use of which allows collision-free and proper leveling and installation of the terrace along the edge of the terraces.

Are you interested in the way of installing a ventilated terrace made of 2 cm ceramic tiles on adjustable pedestals - see the offered by our support pads system under the tiles and take advantage of their good parts.

Ceramic tiles / porcelain tiles

Ceramic and porcelain tiles are available in various sizes. This is a fairly wide selection that allows you to plan almost any space and arrange your property in line with the latest trends. 

We should remember, however, that all the time we have paths, sidewalks and terraces. So spaces available only for pedestrians and light, non-mechanical wheeled vehicles, such as a bicycle, wheelbarrow, trolley, etc. 

Porcelain tiles are by no means suitable for ramps or parking. In contrast, stoneware tiles especially recommended for installation using adjustable pedestals exhibit the following features. 

Frost-resistant stoneware tiles may have a non-slip surface, long-term durability, bending resistance, stain resistance, non-absorbability, easy cleaning, and abrasion resistance.

How to cut ceramic tiles 2 cm?

Montage ceramic tiles on floors always means cutting them. To avoid losing a large amount of material and how to best cut, you need to use professional tools. Everything can be done by yourself. Only does it pay off? 

Do we have financial resources to buy the necessary equipment for cutting and processing ceramic material? Do we have knowledge about the surface and hardness of our tiles? Can we handle the tools that will be needed for trimming, grinding and chamfering? Do we have a large supply of material for experiments? If so, we can plan to do it ourselves.

However, if you did not answer yes to any of the above questions, it will be safer to use the services of a professional team that will take care of placing the tiles in accordance with the art of construction and aesthetic principles.

For cutting ceramic tiles for the terrace, it is recommended to use a saw with a water-cooled diamond blade.

Destruction and damage of the old terrace

The terrace is one of the most vulnerable elements of the house structure. All because of the variable temperatures acting on it, as well as mechanical factors. Often, terrace damage can even be invisible, then they are micro-cracks. 

If they are not properly preserved, they will crack over time. Therefore, the terrace should not only be carefully designed and constructed, but also properly cared for. What and how to do? What to watch out for? What should you remember about?

Cracking tiles, terrace leaks

The most common causes of problems with the tightness of the balcony or terrace include tile breaks and cracks. Tiles detachments and cracks are caused by choosing the wrong adhesive mortar or by using the wrong application method. 

Good quality mortar must be deformable, and gluing should be full-surface with the application of the adhesive mortar both on the substrate and glued tiles. If these rules are not followed, then the tiles may break and crack after the first winter season.

Ceramic tiles in the Polish climate - the most common assembly errors

Here are the most common causes of tile falling off on the terrace: no waterproofing, no proper waterproofing of the structure, first manifested is salting on the tiles, after some time the tiles will peel off; using the wrong tile adhesive; air voids under the tiles - crumbling joints open the way for water that is already working underneath the cladding, the tiles will soon fall off; too narrow joints - also too narrow joints may cause tiles to crack; no proper expansion joints on the large terrace.

Why do the tiles on the terrace fall off? - Material work. Expansion and narrowing, freezing.

The cladding on the terrace or stairs on the ground must be waterproof, but also vapor-permeable. 

Watertight to prevent water from entering the interior of the structure. Vapor permeable to allow moisture to evaporate, but it will get there. This moisture can come from various sources. For example, it may be the remnant of water used to grout adhesive mortar or to make a concrete slab. It can also be moisture pulled up from the ground, if the terrace slab does not have adequate waterproofing. 

Water in combination with winter frost and high summer temperatures creates enormous forces. When changing water into ice due to the increase of its volume, there is so much pressure from below on the plates / plates that it can tear them away from the ground. When you turn water into steam, a lot of pressure builds up because it looks for an outlet. As a result of steam pressure, tiles can also peel off on the terrace.

Material rot. Wood, moss, mushrooms and lichen.

In the case of wood as anisotropic organic material exposed to the outside and not protected against moisture, it is naturally subject to biological aging, including destruction and decay. 

Unprotected wood may also form a surface mushroom and moss.

Who should make my terrace?

The installation of a ventilated terrace is certainly best ordered to an assembly team with extensive experience and references from customers.

How to check the company installing terraces on adjustable pedestals before signing the contract

Testimonials from satisfied customers are very important because they increase confidence in the correct execution of assembly works also for our terrace, balcony, loggia.

Self-assembly of the terrace on the adjustable pedestals vs. professional assembly team

"If you are a fan of montage technique and have experience in construction works and in addition you want to save on montage costs, choose self-montage. Installation of the terrace on the adjustable pedestals is simple.

However, if you can spend additional funds, order a professional team."

Important information before installing the terrace onto tiles and joists

The first important information regarding the planned installation of the terrace, balcony loggias on adjustable pedestals is the price of this product in relation to its quality, as well as the seller’s reference. 

Another important information is the answer to the question whether the planned terrace, balcony, loggia can be mounted on raised supports. It means what kind of ground we have and what height we have to overcome to get the right level of the upper surface of the terrace, balcony or loggia.

The use of support system for the terrace vs. traditional terrace assembly

Traditional terrace assembly may cause the substructure to fail in the future, and consequently also the terrace, especially made of wood mounted with a traditional bolt system, where the terrace board adjoins the joist. 

The process of destroying such a terrace will be related to the penetration and retention of moisture on all elements used in the construction of the structure and substructure, as well as the terrace itself. 

The leveled terrace on adjustable pedestals also called the ventilated terrace / raised terrace strongly prevents moisture retention, an innovative technique for constructing ventilated terraces, especially when using boards and hidden board installation systems, e.g. with the use of connectors for invisible DECK-DRY board installation, providing many years of confidence that the terrace will operate without any problems in the so-called air-dry state, which prevents the development of microorganisms, fungi and mosses.

The cost of the terrace on supports vs. a classically made terrace

The price of the terrace mounted on adjustable pedestals will exceed the cost of the terrace mountage using traditional technique. 

However, it should be considered whether a higher price for defect-free terrace is not more profitable for an investor who, thanks to modern technology, can use the terrace for many years without trouble and defects.

How the use of adjustable pedestals replaces old technologies in construction

Construction, as an industry directly related to workmanship, is quickly introducing new and innovative technical solutions, especially those that guarantee efficient and quick assembly and faultlessness of a given product in the future. 

Thanks to this, the technique of leveling ventilated terraces on adjustable pedestals largely displaces old technologies and outdated methods of their construction as unprofitable and unprofitable due to the need to repair and replace the terrace cover in the near term.

Decide whether you want a ventilated terrace raised on adjustable pedestals

A positive decision will allow the investor to "not go back to the subject" and that is why it is worth deciding on such an investment

Floor leveling scheme

How long will this terrace last? How long the terraces with adjustable pedestals last

As the adjustable pedestals are made of specially selected plastics with high resistance to biological wear, loads and temperature changes, a terrace properly leveled and mounted with the use of leveling pedestals will last a minimum of decades unchanged. 

The weaker link may be the material used to cover the top layer of the terrace and the way it is used and maintained.

Differences between ceramic and porcelain plates

We associate porcelain plates with the kitchen, bathroom and other surfaces under the roof or roof. 

Meanwhile, they can be one of the arrangement solutions that can be used in the home area, including paths and alleys.

Ceramic, porcelain or porcelain terrace tiles 2 cm - a bit of valuable knowledge.

There is really no clear difference between 2 cm ceramic and porcelain tiles. Ceramics and porcelain cannot be treated as two separate segments. They belong to one collection called "ceramic plates". Porcelain is one of the varieties of baked clay. 

Chinese clay with more kaolinite is used for its production. Pure kaolin is a very rare material whose feature is flawless whiteness. Deposits containing more iron oxide usually have a darker color. 

Clay fired at high temperatures is characterized by high resistance to water absorption.

Paving slabs on terrace support roof pedestal system

Granite paving tiles meet both of these requirements - they do not discolor, they are easy to keep clean, and when properly installed they withstand car traffic without the slightest defects. 

You can comfortably walk on them in stilettos or go crazy on a scooter. Their appearance will certainly create a minimalist and modern design of the environment. 

An additional advantage of granite flagstones sold on the market, both those made in sandblasting and flaming technology, is that they are trivial in cleaning and maintenance. 

Granite tiles and terrace slabs will bring timeless elegance and durability to your investment.

Stone tiles - polygonal and formatted stone tiles

"Polygonal stone slabs - with features: split, irregular edges, split or cut faces (sandstone). Available: gneiss, granite, quartzite, sandstone, limestone.

Stone slabs formatted - with cut or broken edges (anti-rusted), split face ""after sawing"" (cut stone without processing), ground, polished, sanded, brushed, e.g. gneiss, granite, quartzite, sandstone. The material is very durable and easy to keep clean."

Differences in panel thicknesses and how to level them

When installing the terrace, balcony using adjustable pedestals, in the event of differences in plate thicknesses, rubber pads will be used. 

Rubber pads divided into parts are used to level differences in the thickness of terrace tiles. 

In the case of an uneven terrace surface resulting from the difference in the thickness of the terrace tiles, the thickness of the thickest slab should be determined and the appropriate amount of rubber washers should be placed underneath the leveling terrace support pads.

Noises while walking on a terrace made of boards - terrace acoustic properties and other sounds.

Acoustic insulation is, simply put, the ability of structural building elements (i.e. walls, ceilings, roof) to prevent sound transmission between adjacent rooms. It is worth taking care of it at every stage of the terrace or balcony construction. Please note that terraces due to their outdoor exposure are at risk of sand particles getting underneath which may cause crackling or crunching of sand particles when walking.

In the case of leveling the terrace, balcony when laying both ceramics, stone, boards or wooden and composite boards on adjustable pedestals, the SBR rubber pad is an excellent soundproofing element.

Wooden terraces

An invaluable place to rest in contact with organic material, especially for users who value the possibility of communing with natural materials. Wooden terraces and balconies are preferably leveled on adjustable pedestals. 

Leveling terraces, balconies made of wood on support pads is very advantageous for several reasons: it improves installation combined with leveling, facilitates and solves the installation of so-called difficult places, thanks to the adjustable pedestals the media is carried out under the terrace without any collision and in case of need a simple open pit can be made, the terrace is ventilated from below, which increases its resistance to biological aging. 

Terraces made of wood require maintenance at least once a year in order to maintain their resistance and thus resistance to biological aging. Activities related to washing, de-greasing and oiling deckboards also increase the aesthetic value of wooden terraces.

Exotic boards (hardwood)

Exotic wood used for the installation of wooden terraces is characterized by increased hardness and thus resistance to biological aging. 

Regardless of the exotic wood terrace mounting system, the use of DD Pedestals adjustable pedestals and other decking components, e.g. the invisible DECK-DRY tare decking system, offers many benefits both during installation and in future use. 

The most important is trouble-free leveling and ventilation of the terrace bottom.

Regional boards (softwood)

Regional wood, whose density and thus hardness is lower, is preferably leveled on DD Pedestals adjustable pedestals, which guarantee ventilation of the terrace from below. 

The use of the native wood terrace mounting system on DECK-DRY terrace connectors can protect the used plank from rotting.

Installation of terrace boards

There are many ways to install wooden terraces on the market. The most popular is the traditional system using mounting screws screwed into the boards from above. 

There are also so-called hidden assembly systems on the market, among others the DECK-DRY system, which is the only one that gives the board the opportunity to live in the so-called air-dry, which in combination with the leveling system on DD Pedestals support pads, especially with native wood, significantly extends the life of the terrace and balcony installed with their use.

Terrace joists

Depending on the material we use on the terrace surface and the terrace mounting system, we can use wooden joists, including exotic or native wood, composite joists, PVC including DECK-DRY PVC unpalat and steel joists, e.g. DECK-DRY ALU . 

DD Pedestals support pads have a special joist adapter that prevents it from slipping.

Distance between terrace joists

The choice of the type and dimensions of the joist and the distance at which it should be mounted is usually determined by the designer, taking into account the spacing of supports for the joists, or the number of adjustable pedestals per m2 to transfer the planned loads for the terrace, balcony and plans for its use.

Installation of terrace joists

when using DD Pedestals support terrace system, also use a special joist adapter that prevents the joists from sliding out of the adjustable pedestals. 

It is fastened with snaps to the upper hat of the adjustable pedestals series: SPIRAL, STANDARD, MAX.

Maintenance and conservation of the wood terrace

Terraces made of wood require maintenance at least once a year in order to maintain their resistance and resistance to external conditions, including moisture, sunlight, and thus resistance to biological aging. 

Activities related to washing, de-greasing and oiling deckboards also increase the aesthetic value of wooden terraces. 

Service and maintenance of the wooden terrace should be carried out only in certain weather conditions from May to September.

Tiles from boards for the terrace and balcony

A cheaper version of the wooden terrace for easy installation on adjustable pedestals are ready-made elements screwed into ready-made modules, most often square-shaped. 

They are perfect for both large terraces and small balconies. And correctly leveled on the plastic pedestals obtain the desired height and stability.

WPC wood composite terraces

Composite decking terraces do not require complicated service and maintenance. 

They resemble natural wood and require no maintenance. 

Regardless of their internal structure, terraces made of composite boards can be leveled using adjustable pedestals.

Advantages of WPC composite terraces

The composite board deforms much less than the wooden board, i.e. it is more stable. 

It also requires less conservation. The price of a composite board is usually lower than that of wood. 

High-class composite boards are close in price to the level that you have to spend for exotic boards.

Differences between wood and composite

Wood as a natural material is friendly in contact, gives a feeling of warmth and coziness, but is subject to changes characteristic of organic materials. 

The composite board has higher stability and resistance to external conditions, in addition, all boards have the same structure and color, thus creating a uniform color surface. 

The price of a composite board is usually lower than that of wood. High-class composite boards are close in price to the level that you have to spend for exotic boards. 

Both terraces made of wood and composite can and should be leveled on adjustable pedestals.

Maintenance and conservation of the WPC composite terrace

The terrace made of composite boards is basically "maintenance-free", to increase its aesthetics you can perform pressure washing with the use of generally available means for the care of surfaces made of composite fiber

Calculation of the demand for terrace adjustable pedestals

Terrace construction

"Many years of experience in the design and installation of terraces, both made of exotic wood, composite boards and stone or ceramic tiles gives us the opportunity to propose the correctly selected substrate for a given type of terrace.

Depending on the customer's conditions, an appropriate supporting structure is made for terrace boards, stone or ceramics tiles and the subsequent construction of the terrace, including the raised / ventilated terrace."

Type of terrace - wooden terraces, composite terraces.

Terraces made on the ground, terraces made on concrete screed, floating / ventilated terraces leveled using adjustable pedestals without anchoring to the ground.

Seamless terraces

It is a technology for securing terrace substrates thanks to seamless insulation, e.g. insulating slurries, bituminous insulations, polyurethane insulation, pool paints. 

Safety seamlessness guarantees an even surface thanks to which the next terrace layers can be laid and leveled e.g. on adjustable bedestals for additional stability and lack of inequality.

Balcony type

Balconies are an architectural element constituting an integrating part of the building. There are three main types of balconies due to the construction. 

The most common are balconies: cantilever, slightly less often placed on an independent supporting structure, separated from the building and suspended.

Terrace waterproofing / Hydroisolation

Due to the ubiquity of moisture in the construction of the terrace, balcony, loggias, proper waterproofing is very important. The design of balconies and terraces must be designed and constructed in such a way as to ensure their safe use. 

One of the main conditions for the durability of these elements is to prevent the ingress of moisture and water into the structure. 

Waterproofing, which is a barrier against the penetration of water and moisture into the structure of the balcony or terrace is also a protection against corrosion of the structural board, leaks and the development of microorganisms. 

The investor should choose waterproofing materials according to such criteria as the type of structural element (balcony or terrace) and the scope of work of the ground - the larger the surface, the more applied materials should have greater flexibility. 

Correct insulation of the balcony and terrace, which protects against water penetration into the structure, is of particular importance when the terrace is located directly above the room, for example the living room. Water entering the structure results in moisture in the ceiling and creating conditions inside the building for the development of biological corrosion, e.g. fungi and mold. 

The terraces are constantly exposed to atmospheric factors - rain, snow, strong sunlight and variable temperature. Especially the temperature in our climate is not very friendly for construction - every year it exceeds the 0 ° C limit at least several dozen times, causing alternately freezing and thawing of materials, and thus their swelling and shrinkage. In this way, all not exactly sealed places where water leaks break, leading to gradual destruction of the structure. 

As subsequent layers cover those previously laid, any defects are difficult to fix. It's easy to hide or overlook them. They will only make themselves felt when there is a leak inside the house.

Terrace thermal isolation

Another very important fragment of the substrate preparation for the terrace, especially in places where the terrace, balcony, loggia is planned over the existing room. Thermal isolation allows savings in terms of heat loss.

Decline and slope of the terrace, drains

It does not matter whether it is a terrace on the ground or above the room. Everyone must have a suitable slope to drain the rainwater from the terrace floor. What should the terrace fall down like? 

The terrace surface should be shaped with a slope outside, i.e. it must fall away from the building wall. A terrace fall of 1-2% (1-2 cm per meter in length) is considered sufficient. 

Such a decrease in the terrace surface is practically imperceptible to the eye, and very important for the life of the terrace. 

It prevents the penetration of rainwater or coming from melting snow into the building interior, moisture of the building walls, and also facilitates the free drainage of water. 

It is unacceptable for the terrace to fall toward the building - then its wall is exposed to moisture, and puddles may form when entering the terrace.

Incorrectly made terrace fall

It results in: dampness of the base, peeling and destruction of the terrace cladding, leakage through the terrace slab, flooding of the room located under the terrace.

Leveling on adjustable pedestals allows you to level the terraces, balconies, loggias in accordance with all recommendations and protections for insulation including EPDM and jointless and obtain the correct slopes for water outflow, which is a condition for the proper functioning of the terrace surface.

Podłoże do ustawienia wsporników tarasowych

Ventilated terrace is a technology that can be used both on the ground, but also on old and new concrete screeds. Making such a terrace is economical and easy to assemble.

Do ventilated terraces have only advantages?

It seems that is right. Their construction is simple and cheap, so you can do it yourself. Plus, it's easy to replace damaged components and the flexibility of the surface on which the terrace will stand. 

The construction of the ventilated terrace consists of plates mounted on special support terrace system placed on a stable surface. In the space between the terrace surface and the ground there will be space for necessary installations, which you can run even after the terrace is made. 

All media will be under the terrace without a collision and you always have the opportunity to trouble-free outcrop. Raising the terrace above the ground makes it possible to drain rainwater, and the surface is hardy. Terrace tiles are laid on the adjustable pedestals. 

Their installation is quick and simple, and if it needs to be replaced during use, there is no problem. The tiles, similarly to the adjustable pedestals, were removed, provided they had no mechanical damage or destruction, and are suitable for re-use, e.g. elsewhere.

How to build a ventilated terrace?

The construction of a ventilated terrace can be divided into two stages. The first is to prepare the ground, the second to lay the tiles, wooden and composite boards, ceramics and concrete tiles on the adjustable pedestals. 

Remember to ensure proper water drainage during ground preparation - that is, to shape slopes outside. The substrate should also be protected against adverse weather conditions, for example with heat-welded roofing felt - the corners should be carefully sealed. On the prepared surface, we start placing the adjustable terrace pedestals on which the terrace tiles will be placed. 

The adjustable pedestals, e.g. DD Pedestals for terrace tiles, are made of appropriate plastics. They transfer loads / ranges given by the manufacturer /, both at positive and negative temperatures / temperature range given by the manufacturer /. 

In addition, the adjustable pedestals do not bend and are resistant to damage. The height of your badjustable pedestals will depend on the height of your ventilated terrace. 

However, they are selected mainly depending on the substrate. There are three types of adjustable pedestals: height available on the market:

How to prepare the ground for terrace roof pedestal system

The ground (foundation) for each planned terrace should be stable. In addition, it is preferable for the ground to be even, because the terrace can be laid / mounted directly on such ground. If the ground / foundation is uneven / and a leveling element should be used (e.g. DD PEDESTALS adjustablepedestals). The durability of the terrace structure depends on the properly prepared substrate.

Sand and cement base

Each construction should be adapted to the function it will fulfill. Terraces should be adapted to the needs of the owner. Those skilled in the art will certainly advise you on the design of the ballast for a specific construction and these design recommendations, including material choices, should not be ignored. What counts is quality and professionalism.

Groundwork - sand, cement or gravel?

The choice should be well thought out and suited to the project. In loose condition, the selected ballast should be leveled and its thickness adjusted to the needs of the surface. Your choice will allow you to finish the construction and enjoy the effects. After all, you want the effect to be lasting!

Concrete screed

"The screed on the terrace should not be made without good preparation. It is easy to overdo with the amount of concrete poured, which can result in an uneven terrace. 

Surely we must always take into account the thickness of the material that we plan to lay on the screed. Especially when the terrace exit is connected with the entrance to the building, and the balcony door opens outwards, it is quite important.

Before making a screed on the terrace, you need to prepare a primer with proper isolation. In the past, this concept was not known in construction and many buildings began to destroy because of the lack of proper isolation at the base, and the terrace can also directly adhere to the ground. A screed may also be needed when we want to create columns for terrace construction."

Heat-sealable hydroisolation

Heat-sealable roofing hydroisolation is a well-known insulation material used for roofing, foundation insulation, waterproofing terraces or balconies. Heat-welded roofing felt is becoming more and more popular, replacing roofing felt with traditional adhesive.

Heat-sealable roofing hydroisolation - characteristics

Heat-weldable roofing felt consists of several layers: topping, bitumen top layer, support matrix, bottom / bottom bitumen layer, release film. Heat-weldable roofing felt is glued by melting the bitumen on the bottom layer with a burner. 

They have a factory-prepared plant that allows for quick tight connections of individual roofing felt strips, so well-laid waterproofing from roofing felt is durable. 

It should also be remembered that the adhesive melts at 70 ° C, so the roof covering must be resealed every few years. Heat-sealable roofing felt has much better properties and does not require renovation for a long time.

Liquid hydroisolation

Also called liquid foil. Is liquid film really a film? In fact, it is rather a specialist product based on synthetic resins, which, after drying, has sealing properties - anti-moisture and anti-moisture, just like real foil. 

However, while it is difficult to imagine ordinary film as a material that would isolate elements from moisture for a long period - the liquid film is created just for such applications.

EPDM rubber isolation

EPDM is a synthetic rubber (rubber) belonging to the group of elastomers. EPDM is an abbreviation of the English name of the main membrane component, i.e. ethylene propylene diene monomer.
Other components of EPDM rubber are: technical carbon black, silt, technical oil, sulfur, stabilizers. 

This rubber is formed in the vulcanization process. The main advantages of EPDM: high flexibility in very low temperatures, high elasticity and extensibility, pressure resistance, dimensional stability, high durability, easy installation, chemical resistance and environmental friendliness.

Hardness of XPS isolation boards when using adjustable pedestals

- for styrodur XPS - 200, the allowable compressive stress at deformation up to 10% is 200 kPa. Converting Kilopascals to kg / cm ^ 2 we have 200 kPa = 2 kg / cm ^ 2. So it turns out that we can put a load of up to 357 kg on one bracket.

  - for styrodur XPS - 300, the allowable compressive stress with a deformation of up to 10% is 300 kPa. Converting kilopascals to kg / cm ^ 2 we have 200 kPa = 3 kg / cm ^ 2. So it turns out that we can put a load of up to 535.5 kg on one bracket. The above applies to the Standard series.

How to finish the edge of the terrace?

Drip cap, gutters, balustrade, the correct execution of all layers of the terrace does not guarantee that there will be no damage over time. If the edges are not carefully finished and the space along the walls of the house ineffectively sealed - the terrace can leak and destroy.

Drip cap - The edge of the terrace must always be ended with a drip cap in the form of a sheet apron, which projects 3-5 cm beyond the edge of the terrace tile. It protects not only against the formation of stains on the wall or pedestal, but above all protects against water penetration under the surface. The drip caps are attached directly to the tile adhesive layer, the part extending under the tiles should be perforated to allow good adhesion. An appropriately shaped coated aluminum sheet or system profiles adapted to draining the terrace are used as the drip cap.

Gutter installation - on large, uncovered roofed terraces, gutters are mounted along the lowest edge. This will prevent streaks that could be caused by rainwater on the façade, which always flushes dirt from the terrace surface. The gutters are mounted at the lowest edge of the surface slope, but on larger terraces it is also worth mounting the gutters on its sides. The edges of the terrace should be finished with metal aprons directing rainwater to the inside of the gutter.

Terrace railing installation - Railing seating

A common cause of terrace leaks is improper seating of balustrade posts. Because of their strength, they should be embedded in the terrace slab, which interrupts the continuity of waterproofing. 

In the place where the posts are placed, it is necessary to apply a sealing layer of silicone (in the form of a conical ring surrounding the post). Another solution is to fix the posts not to the top of the terrace slab, but from below or on the leading edge. 

Without disturbing the waterproofing. The system of such railing installation was introduced by, among others, DECK-DRY, the railings anchored to the deck without invading the terrace ground.

Connection of terrace layers with the building wall

Correct execution of this connection is important for the tightness and durability of the terrace. The basic condition is that 10-15 cm damp isolation is erected on the wall of the house. 

If waterproofing is being laid during renovation, in the form of roofing felt on an inheritance layer, it should also be erected on the wall, with an oblique filling in the corner that allows for gentle bending of isolation. 

However, in the case of tile isolation, an isolaiting tape insert is glued in the corner, and a layer of liquid film is applied to the wall. Due to protection against dirt as well as additional protection against water ingress, the wall strip near the terrace floor should be covered with ceramic tiles. 

They must not come into direct contact with the terrace surface - at the contact with the wall we leave an expansion gap (filled with an expansion cord, covered with a layer of silicone). The top edge of the plinth tiles is also secured with silicone or acrylic mass.

Attic around the terrace

The attic is a structural part that closes the space of a balcony or terrace from the outside. Usually it has the form of a characteristic wall. In modern construction, attics are most often found on flat roofs, however, they are increasingly used on terraces and balconies. Attics can have different heights. 

The most important, however, is the function they perform. First of all: the attic closes the thermal insulation of the balcony or terrace. It is also a type of water restriction. Low attic walls are ideal for mounting railings. High can be an alternative to railings, while being an effective architectural element. 

Thanks to the attic on the terrace or balcony, the continuity of insulation layers is ensured - all thanks to the fact that it is not necessary to install balustrades and eaves profiles.

The window frame at the terrace

Wall and facade as a terrace edge

Home terraces can be done in many ways. One of the most popular is to make a concrete terrace tiles on a layer of compacted sand, leaning against the edges of concrete blocks, built on a foundation block. It does not matter if the terrace is adjacent to only one wall or to two - in the corner of the house. 

Just like stairs, the terrace should also be separated from the house structure - preferably it will only touch the isolation of foundation walls made of extruded polystyrene or hard foamed polystyrene.

Also the benches on which the walls surrounding the terrace will be built of concrete blocks should be recessed in the ground (especially the ground floor) to a depth equal to the freezing zone of the soil. Since the concrete slab of the terrace is peripherally supported on these walls, it would not be good if it was broken due to frost linings lifting its edges.

Terrace covers

The curtain of the side and end parts of the terrace are usually elements attached to the side edges and to the front part in order to mask the so-called terrace substructure, e.g. leveling made on adjustable pedestals. 

Maskers can be made of a wooden board cut to the appropriate width, from composite masking slats, curb or stone. Masking the edges of the terrace can also be a suitable type of plants planted on the edge of the terrace.

Ventilated terrace eaves profiles

The correct finish of the hood is a condition of a durable terrace or balcony. The eaves profile should have anti-corrosive coatings appropriate for the application and a structure that ensures the tightness of the eaves. 

Ventilated floors are currently the most dynamically developing technology used in the construction of terraces and balconies. 

This technology owes its development to simple workmanship, lack of rigid and glued joints, and high durability. 

For the proper functioning of a ventilated floor, eaves profiles are necessary, which act as a support for floor panels and ensure proper drainage of the floor.

Terrace borders

Terrace borders are the latest generation of multifunctional edges, forming a stable, aesthetic crowning arrangement of terrace surfaces. 

The solution based on a simple, innovative mechanism and durable material, allows for quick and effective finishing of also irregular terrace systems. 

Used on gravel, grass and concrete surfaces, they are perfectly suited various types of terrace cubes. 

In addition, after cutting out the lateral bridges, they can be installed even in compositions based on the shape of the arch. Edges also work as expansion joints.

The foundation for terraces on joists

It should be designed and constructed according to the planned terrace surface. Suitable for wooden, composite boards, ceramics tiles or every other terrace tiles. Also depends on the type of floor or building conditions. 

So always chosen properly for the planned terrace or balcony, depending on its purpose and loads.

Aluminium Joists

Used for greater rigidity of the structure, in case of need for NRO for the object, required at higher terrace loads depending on the load capacity of the material used, for grounding.

Wooden joists

Used mainly for the foundation of wooden terraces. The joist wood species are selected with parameters similar or the same as the material used on the terrace.

Composite joists

It is selected according to the material used or terrace mounting system, e.g. DECK-DRY hidden mounting system, and also preferably in the construction of ventilated terraces on DD Pedestals adjustable pedestals.

Joist frame construction

Very important when installing composite terraces due to the technical parameters of the boards used, the frame stiffens the structure and prevents material distortions.

Terrace opening

Made to maintain privacy as a decorative element, as a separation of the terrace / balcony size for individual residential premises.
Adjustable pedestals with and without height adjustment - depending on the needs, we divide the leveling pedestals, i.e. those whose heights can be adjusted or stacked and those whose height is constant.
Fixed height support terrace pads system for terrace tiles with a constant height of 2 mm for laying under terrace tiles to stabilize corners and gaps between the tiles.

Fixed height support pads Terrace support pads for slabs are pads that are not adjustable in height, stackable ""one on top of the other"" in stacks, max. 3 pieces as adjustable in steps, used for mounting (supporting) ceramic, concrete and stone slabs. Among them are several types available for different applications.

Adjustable pedestals SPIRAL series - height range allows leveling in the range of 17-30 mm

Adjustable pedestals, STANDARD series - bolt-adjustable ""smoothly"" in the height range of 30-420 mm

Adjustable pedestals MAX series - screw-smoothly adjustable in the height range 150-950 mm

Adjustable pedestals comparison

Support pads in constant high

If the terrace floor is part of it, i.e. it does not have any recesses, unevenness, holes and it does not depend on its floor being at the level used, use a support pads for terrace tiles of constant height. 

These stands under the terrace tiles cover above the terrace ground and fix the gap between the slabs. This is the most basic solution when installing ventilated terraces.

Support pads for laying on gravel

If you plan to lay terrace tiles on a stable place, i.e. sand and cement bedding, compacted aggregate. In addition, we do not want to use glues and mortars for boards so that there is no need for their grouting. 

In this case, washers for dry laying on gravel will work best. These washers with a thickness of only 2 mm ensure a gap between the panels for free drainage of water and at the same time keep the corners of the panels at the same height so that the panels will lie evenly.

Low-altitude terrace vs. high terrace

Self-leveling adjustable pedestals for the terrace fall

Base slope corrector in relation to the terrace drop

support pads for tiles

adjustable pedestals for joists

high of adjustable pedestals

high regulation

Height of adjustable pedestals with a key from above

increasing the height range of adjustable pedestals

Horizontal and diagonal bracing of the support pads

NRO self-extinguishing adjustable pedestals

Wind resistant adjustable pedestals

Durability of adjustable pedestals for terrace tiles against loads

-How much adjustable pedestals are needed per square meter of terrace

When preparing the terrace design, it will be necessary to calculate the number of terrace supports to be used. The final number of adjustable pedestals needed will depend on how densely the adjustable pedestals are spaced apart on the terrace. 

That is, what grid of brackets will be set (what distance will be between the adjustable pedestals). 

The distance between the adjustable pedestals depends on the type of floor and the planned terrace load. 

If, for example, 60x60 cm terrace ceramic tiles are laid on the terrace, then the adjustable pedestals will be spaced every 60 cm between each other. 

For example, if they are wooden terrace joists, the spacing between the adjustable pedestals will be e.g. 50-60 cm. On this basis, we are able to calculate how many terrace adjustable pedestals are needed per 1 m2 of terrace.
The table shows how many adjustable pedestals are needed per m2 of terrace
- Should the adjustable pedestals be attached to the ground?

Freezing water in winter

Installation the adjustable pedestals on the terrace

How to install a raised ventilated terrace

label packaging cartons terrace supports
- Packaging tailored to your needs

FAQ - Frequently asked questions about ventilated terraces on terrace suppor pads

In connection with numerous questions ordering clients and contractors, we have created a special section with frequently asked questions about the technique of laying terraces on adjustable stands and fixed height. 

We try to answer every question so that in the future anyone looking for information can find and use it in the implementation of their ventilated terrace.

Dictionary and definitions related to the technology of ventilated terraces laid on terrace support pads

Do you want to have a beautiful and durable terrace for years?

Contact us or check where you can buy our products.
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