Aluminum substructure

An aluminium substructure is by now the established technical standard when building a terrace. Compared to wood, aluminium offers a number of advantages in addition to its higher load-bearing capacity, such as waste-optimized and faster installation due to fewer support points, dimensional stability and ultimately a high durability of the rails.

The CLIP rails (BIG- and TWIXT-Isostep as well as H-Isostep), in combination with the CLIP terrace bearing points, enable quick, uncomplicated and virtually screwless installation by simply clicking them on. Only 23 mm high, the SMART Isostep is the ideal problem solver when only very low installation heights are possible. Planks and/or ceramic tiles can be laid on these aluminum rails with the appropriate accessories, in line with our claim: ONE system for ALL coverings.


  • Suitable for all terrace coverings
  • Screwless and therefore quick assembly possible with the CLIP system
  • High durability due to rot-proof material
  • dimensionally stable
  • Powder-coated surface in black RAL 9005
  • Resistant to tannic acid


Connector CLIP rails

Connector SMART-Isostep

Connector BASE-Isostep / 50x30 Alu-Uk