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What is the difference between Novabrik Regular and Novabrik Therm?

There are several differences, mainly in the product capabilities. Novabrik Regular is made from crushed aggregate and it weighs 2.4 kg. It is used for actively ventilated facades where humidity is carried off by air flow using a chimney effect from bottom up in a rear ventilation cavity. The cavity is created between the wall to be faced, or thermal insulation, and the back face of the brick (minimum gap thickness 15 mm, maximum 40 mm).

Novabrik Therm is thermal-insulating and it is based on a hydrophobic pearlite. The brick weighs 0.9 kg and it replaces up to 4 cm of mineral wool. Rising damp in the interior passes through masonry and leaves trough thermal insulation (that has to be diffusion-open) directly through the Novabrik Thermal facing tile to the outdoors. Thermal insulation can touch the back side of the bricks. If there is a gap between the insulation and the brick from the distance grid, it must be “blocked” at the bottom and at the top so that there is no movement of air. The trapped air works as another thermal insulant.

To make the insulation of a house perfect, we also recommend an additional suitable thickness of the insulation under both types of bricks. However, insulation is not only about the thickness, but also about the properties of the materials when dry as it is only dry material that provides proper insulation and accumulates heat.

Do any small parts of the material loosen from the brick surface?

Yes. This can happen in all concrete and pearlite-concrete products with split surface treatment of the facing. When splitting products, the individual grains of the stone or pearlite on the level of the product crack (split) at the facing due to the splitting knives. The loosened particles and grains then remain trapped between the two facings of the product. During installation and after installation, the surface of the product may seem to be crumbling and dusty. This is not a product defect; they are just loosened particles after the splitting process. Atmospheric effects on the facade (rain, wind) remove the particles from the surface of the bricks.

Is Novabrik too heavy?

No, because it evenly applies a load to the foundation base and wall footings of the house, which is more than 90 % of buildings. The shape of the brick moves the centre of gravity closer to the wall being faced so Novabrick has a tendency to cling to the wall.

What is the maintenance of the facade, does it have to be painted?

No, you never ever need to paint your façade again. If required, you can wash it with water.

Can I install Novabrik on my own?

Yes. If you are skilful and have all the tools, you can start working. An installation handbook is available at our website. We are available to answer your questions or to provide training on the site.

How is Novabrik installed?

Novabrik is installed on the base material to be faced using anchor bolts.

Does it mean that I have to screw each brick in?

No. When you install the starting and distance slats, you will start the first row of  Novabrik bricks. You drill a hole into each brick to be placed on the starting slat at the spot where the brick crosses the slat on the prepressed row of the product at a 25° angle. The same method applies to the second row of bricks. Then, you place two rows of bricks and anchor every third row of bricks (for Novabrik Regular; you can anchor every fourth row of bricks for Novabrik Therm), always in the spot where the brick crosses the slat. At the height of 5 m from the first row, you perform basic re-anchoring (just like at the base but without the starting slat) and repeat the process up to the height of 5 meters again.

Is every brick predrilled?

No. It is drilled on the site as required. Use a bit for concrete. If you drill directly on the wall, make sure that the assembling point is clean.

How are the distance slats installed?

The slats are anchored on the wall in a vertical position, 50 cm apart, which is the thickness of the insulation. They are anchored according to the base material, usually with the use of wall plugs with a distance of  50 cm. If the base material needs to be levelled or bricks are installed on the roof slats (30x50 or 40x60), we use anchors that allow levelling any irregularities and ensure sufficient stability of he distance grid.

What slats should I use?

We recommend using wooden distance slats cut from damp-proof plywood or OSB. The slat is 10 to 20 mm thick and 40 to 70 mm wide. When thermal insulation is installed additionally under the bricks, we recommend using spruce, pine wood slats with dimensions of 30x50 or 40x60, impregnated against humidity. Select thickness of the slats according to the thickness of the insulation, always by 1 cm greater that the used insulation. You can also use metal distance slats made from galvanized sheet with thickness of  0.8 mm. the height and width is similar to OSB.

What to do when the brick gets damaged on the area of the faced wall?

If the area of the damage is small, you can replace the brick without disassembling the surrounding bricks. Use a sharp chisel to cut the damaged brick out. Remove all particles of the broken stone from the spot that is being repaired. Then take a new brick and cut the top, anchoring part of the brick and use adhesive to insert the bottom (split) part of the brick into the spot of repair. You can use silicone adhesive, adhesive for tiles etc.

How much is a square meter of Stavoblock?

We need more information about the project to be able to answer this question. To provide correct information, we offer free consulting services, including the preparation of a quotation, directly on the site, a statistical calculation or preparation of project documentation.

What are the advantages of Stavoblock when compared with other systems?

Stavoblock is definitely advantageous thanks to the fact that it is not required to brick up foundation. The wall is built on a packed aggregate bed (about 150 to  200 mm thick – according to the wall thickness) and the individual blocks are then assembled in a dry manner without any concreting and reinforcing. There is no pouring of concrete and technological breaks. Dry assembly constructions allow relative displacement between the  individual bricks caused by uneven settling, different load and other effects.

Dry joints eliminate ugly cracks in the bed and butt joints and braces that prevent movement of the wall. The variability of the system is also an important aspect, as well as its visual effect where it is possible to combine shapes, surfaces and colours.

How high can the wall be built?

Stavoblock is suitable for the construction of dividing walls and supporting walls, almost without any height limitations (static evaluation is required for heights above 1 m).

Can I use Stavoblock to build a fence?

Yes. Basically, two facing elements are assembled together. They are connected using anchoring connections (the selection of which depends on the thickness of the wall). It is possible to build a fence wall that is split with sand colour on one side and red-brown ground on the other side. The system also provides other elements for solving corners and finishing covering boards.

What is it like with fence filling and the gate?

You can install both filling and a gate or a large gate for a vehicle into the dividing walls, as well as electric distributors. We recommend consulting the method of anchoring and installation with a technical consultant, or you can find the information you need in the recommended installation manual.

How do I finish a supporting wall?

You can finish the supporting wall with covering boards or by levelling the terrain up to the height of the supporting wall. If you use the covering board to finish the supporting wall that will be walkable (terrace), we recommend using adhesive for concrete to install the board.

How many anchoring braces do I need to use behind the facing element?

The number of anchoring braces is calculated statistically based on the load. You can find construction drawings of supporting walls on our website, sorted by height and load based on the statistical calculation.

Is it possible to use Stavoblock to build the supporting wall and then do the backfill?

No. Each layer of the Stavoblock masonry must be backfilled with the filling material. The material is compacted, overflowing material is removed, bricks are swept on the top and then you can start building a new layer. Compaction of the reinforced soil or soil behind the wall is also done by individual layers.

What material to use for backfilling a Stavoblock supporting wall and for foundation?

To backfill Stavoblock bricks, you should use sorted and washed aggregate with appropriate grain composition. The ideal backfill material is aggregate /gravel/ with fraction 4-8 or 8-16 mm. For the foundation, you can use aggregate with a larger fraction /16-32 mm/, or the same aggregate as for the backfill. It is important to create a levelling layer from fine aggregate into which Stavoblock bricks will be installed.

Can I use Stavoblock for outdoor staircase?

Yes. You can use the facing element with a combination of anchoring braces to build the staircase and the covering boards as the contact layer. The system can be used to build an open, closed or arched staircase.

What are the advantages of a staircase built from Stavoblock?

Stavoblock has a great advantage in not having to brick up the foundation. The wall is built on a packed aggregate bed (about  50 to 200 mm thick – according to the wall thickness) and the individual blocks are then assembled in a dry manner without any concreting and reinforcing. There is no pouring of concrete and technological breaks. Dry assembly constructions allow relative displacement between the individual bricks caused by uneven settling, different load and other effects. Dry joints eliminate ugly cracks in the bed and butt joints and braces that prevent movement of the wall.

Another advantage is the better static bonding of the facing elements using connections and braces that prevent movement of the wall. The variability of the system is also an important aspect, as well as its visual effect where it is possible to combine shapes, surfaces and colours.

Is it necessary to always build a staircase as a part of the supporting wall?

No. The staircase can also be built as a solitaire in the garden with adding a railing, which depends on the owner of the construction.

What is the height of the stair?

The stair is 200 mm high. Standardly, it is formed by the Jumbo element (200 mm) and the covering board (75 mm). The covering board for each stair always covers the part of the facing area of the Jumbo block. The facing area of the stair is thus 125 mm.  

How much is a square meter of the Tri-Lock pavement?

To calculate the price per square meter, we need to know what purpose the pavement is to serve, what terrain it is going to be installed in and what the load will be. Then we can recommend a suitable thickness, reinforcement or surface treatment. The basic price for Tri-Lock with thickness of 100 mm is CZK 400/m2 without VAT and CZK 630/m2 without VAT for 150 mm. Colouring and reinforcement by Fibrex are charged additionally.

What is Tri-Lock made from?

The pavement is made from high-strength precast concrete and it consists of two parts: the lock and the key. The elements of the system are manufactured in two dimensions and weights for maximum protection of the foundation and for various loads.

What are the advantages of Tri-Lock when compared with other systems?

A regular interlocking pavement is not only more demanding when it comes to the base material, preparation of the bottom layer and duration of the installation, but it also often requires securing the side edges of the pavement with curbs to prevent gaps between the individual pieces. We need to emphasize that such types of pavements are impermeable, without the ability to absorb water after rain. Any slight irregularities of the surface of the pavement creates puddles. When you use Tri-Lock, you don’t need to install curbs along the edges of the pavement and the shape of the pavement prevents the creation of puddles.

How is Tri-Lock assembled?

The individual blocks are standardly assembled manually. For roads, the base is prepared in the same way as for an interlocking pavement but curbs are not required to be used with Tri-Lock. The system is easy and it can be installed by untrained workers supervised by a trained employee. The pavement is maintenance-free for its entire service life.  

Can I also use Tri-Lock as a porous pavement?

Yes, you can use the pavement to reinforce areas that will be turfed later. The system is suitable for parking lots, temporary roads and park pavements. It is safe for lawnmowers.

What are the main rules for installing outdoor pavement?

The installation of outdoor pavement must follow several important rules. The pavement must have a falling gradient to prevent the formation of puddles and to allow water that is not absorbed to flow away. When the terrain is sloping, you should choose a rougher surface of the pavement for safer walking. Place the pavement on a permeable, properly pointed base layer of fine chippings (5 cm) placed on a rougher gravel layer (10-15 cm). Use dry quartz sand (0-2 cm) to fill in the joints and let it sit for about three weeks to settle before you sweep the pavement.

What is the load capacity of the interlocking pavement?

If you choose an industrial interlocking pavement, the load capacity is really high. The joint concrete pavement is able to withstand the load of freight traffic of up to 40 tonnes.

What terrain is Tri-Lock suitable for?

Tri-Lock is ideal as reinforcement of areas surrounding buildings, water channels and lake dams. It is ideal for sloping or statically or dynamically exposed areas and slopes that are exposed to erosion. It can be used as permanent concrete mesh installed below the surface of the terrain and so on. Flexibility is achieved by bevelling the internal lock of the blocks that allows using the system in an undulated terrain. It can also be wrapped in the plane and twisted into a helix. It can be applied on slopes of up to 60°. It can also be installed under water.

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