Terrace substructure aluminum black 40x60mm

Decking boards ” Substructure ” Aluminum

Aluminum substructure

An aluminum substructure is practically indestructible and distortion-free. However, an aluminum substructure places special demands on the screw connection. For a visible screw connection, our decking screws for aluminum should be used or the approved BioMaderas clips for concealed fastening.

from 11,20 

The right accessories for the aluminum substructure

Substructures made of aluminum are very straight and practically indestructible. However, the material also places special demands on the construction method and screw connections. You can find the right accessories here.

Constructive advantage

With a wall thickness of 2 mm, the aluminum substructure provides sufficient support for the screw and at the same time reduces the stresses that can arise from the working of the wood.

Aluminum substructure 49x29mm black
Decking screw aluminum special BioMaderas

System solution

If wooden planks are installed on an aluminum substructure, the screws between the plank and the substructure should have a shear range: Wood moves with temperature fluctuations, but aluminum remains rigid – if the screw has no clearance, it will otherwise break quickly. A spacer profilewhich is placed between the wooden planks and the aluminum construction creates the required clearance. With a concealed screw connection using the BioMaderas clips – which are specially adapted to the aluminum substructure – no spacer profile needs to be used.

Terrace construction advice

We will be happy to advise you on the use of aluminum as a substructure for wooden decking. We will be happy to create a installation plan and an offer for your wooden decking and calculate how many rows of substructure are required. Depending on the desired installation height, you can choose between the flatter and higher aluminum substructure, or a structure with pedestals to choose from. Visit our online consultation and find out how to install a substructure for a wooden deck. Or take advantage of the personal consultation the knowledge of our experts.

Aluminum cladding for decking boards

Frequently asked questions (FAQ)

An aluminum substructure is laid on a stable, level substrate. The profiles should be aligned with a slope of 2% in the direction of water drainage. Use spacers to ensure ventilation and fasten the profiles with suitable screws.

Aluminum is more durable, more weather-resistant and does not warp like wood. It offers greater stability and is resistant to moisture and pests.

For aluminum substructures, we recommend stainless steel screws with a drill point that are especially suitable for metal. These prevent corrosion and ensure secure fastening.

The distance between the profiles depends on the thickness of the decking boards, but is usually 40-60 cm. The number of profiles depends on the total area of the decking and the selected spacing.

Yes, wooden floorboards can be installed on aluminum substructures. Make sure that the screws are suitable for wood and aluminum. In addition, a separating layer should be used between the wood and aluminum to prevent contact corrosion.

Additional substructure made of aluminum and wood

Substructures made of wood have advantages and disadvantages compared to aluminum. You can find a comparison here:

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