Perimeter joint and edge

How this node works

Along walls and columns a compressible strip detaches the slab, so it can shrink and move without restraint (and without cracking at the edges). Below, the turned-up vapour barrier and the insulation complete the build-up.

Key points

• Wall
• Compressible perimeter strip
• Quartz wearing layer
• Concrete slab
• Turned-up vapour barrier
• XPS insulation + sub-base