Water barriers and drainage facilitation
Reliably protects and insulates waterproofing layers against mechanical damage
Withstands extreme compression loads of 400 kN/m2 (up to type-60 heavy trucks, depending on the covering).
High drainage capacity prevents frost damage and encrustations.
Water-vapour pressure is drained away through the structure
Water drainage capacity exceeds that of gravel or chipping layers.
No obstruction by sludge underneath the covering layer
Good load distribution prevents point loads on the waterproofing layer
Resultant static building loads lower than those of gravel layers
Easy and cost-efficient installation.