Delta-Geo-Drain Quattro Four-ply Drainage Sheet
Product catalogue
Effective foundation protection for thick viscoplastic coatings is offered with Delta-Geo-Drain Quattro from Delta Membrane Systems – even if driving rain is able to penetrate through an imperfectly installed upper edge trim.
In an absolutely watertight system, such rainwater would exert hydrostatic pressure on the waterproof coating.
However, Quattro’s micro-perforated slip film which – together with the additional filter cloth – acts as a backup drainage layer behind the dimpled sheet to ensure that any water is drained off safely.
In addition, the slip film prevents the transmission of movement to the waterproof coating.
The laminated cloth – which sits between the film itself and the dimpled sheet – soaks up the moisture and then, in effect, acts as a wick to drain the moisture.
CI/SfB subheadings under which this document is classified:
The product information is supplied by NBS Plus which is a library of building product manufacturer information linked to NBS clauses and clause guidance.
The following products are related to this document:
Delta®-Geo-Drain Quattro
A protection and drainage system.

J40 Flexible sheet waterproofing/ damp proofing, Q37 Green roofs
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