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substructure

The appropriate substructure forms the foundation for wood and WPC decking. It ensures a stable construction and enables a professional installation result.

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Now available at Gunreben.de in the usual top quality:


Substructure – a stable base for your terrace

Load-bearing and essential: The substructure is the foundation of any professional terrace installation. Whether for wood or WPC decking – at Gunreben, you will find suitable construction timber, aluminum profiles, and assembly accessories for a stable terrace build tailored to your decking and structure.

Depending on the structure and decking, various substructures are available for terrace construction. Wooden substructures are particularly suitable for classic wooden terraces. WPC substructures are water-repellent and UV-resistant depending on the version, while aluminum profiles offer high dimensional stability and weather resistance. It is crucial that the substructure, decking boards, and fastening system are coordinated with one another to ensure a stable and well-ventilated terrace structure.

Advantages of our substructure systems

  • ✔ Suitable for wood and WPC decking boards
  • ✔ Available in various materials: wood, WPC & aluminum
  • ✔ Different material properties to suit each terrace structure
  • ✔ Easy to install – also for DIY projects
  • ✔ Ideally combinable with clips, rubber granulate & spacers

Systematically toward the perfect terrace

Our substructures can be ideally combined with decking boards, WPC boards, assembly accessories, and care products – for a resilient terrace with a professional structure.

Material selection & professional construction

Which substructure is suitable depends on the decking board, the surface, and the intended use. Wood, WPC, and aluminum have different material properties. Therefore, the material, center-to-center spacing, ventilation, moisture drainage, and fastening system should be coordinated with one another.

Gunreben – Your system provider for decking boards & matching substructures.

FAQs

The substructure is the load-bearing base of a terrace. It ensures that decking boards rest securely, are sufficiently ventilated, and that water can drain away better. A professionally planned substructure supports a stable construction and reduces risks such as waterlogging, warping, or uneven surfaces.

For wooden terraces, substructures made of suitable types of wood or aluminum are often used. For WPC decking boards, WPC or aluminum substructures are used depending on the system. Depending on the product, WPC versions are water-repellent and UV-resistant, while aluminum profiles are characterized by high dimensional stability and weather resistance. It is important that the substructure, decking board, and fastening system are technically compatible.

When building a terrace, a stable base, sufficient slope, good ventilation, and appropriate spacing are crucial. The construction should be planned in such a way that water can drain off and moisture can dry out. The center-to-center distances must also match the selected decking board.

The appropriate fastening depends on the decking material, the substructure, and the desired look. Wooden decking boards are often screwed in visibly or hidden, while WPC boards are often installed using clip systems. It is important to use screws suitable for outdoor use, matching connectors, and a fastening system that is approved for the decking board.

The service life of a substructure depends on the material, construction, ventilation, moisture protection, and maintenance. Aluminum is characterized by high dimensional stability and weather resistance. With WPC, water-repellent and UV-resistant properties support its use outdoors. For wood, the type of wood, structural wood protection, ventilation, and moisture drainage are decisive.
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