Wecryl 178

Primer for Damp Substrates

Brief Description

Wecryl 178 is a fast-curing, water-vapour-impermeable primer that acts as a barrier on damp mineral substrates in preparation for the subsequent application of WestWood waterproofing or surfacing products.


2-component, fast-curing, PMMA-based primer (PMMA = polymethyl methacrylate)

RAL colours

Wecryl 178
is available in the following standard colours:



Wecryl 178 is used as a barrier on damp, mineral substrates, e.g. concrete substrates or cement floors.

Properties and advantages

  • Primer for concrete substrates and cement floors affected by damp underneath or behind
  • Water vapour permeability: Sd > 50 (class III according to EN 1504-2)
  • Easy to apply
  • Fast-curing
  • Very good adhesion on absorbent substrates
  • Hydrolysis- and alkali-resistant
  • Solvent-free
  • Tested according to the DAfStb guideline (issue 2001), part 4, section 5.5.15 - Bond behaviour in the presence of rising damp


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Postal address

WestWood® Liquid Technologies Ltd.
31 Morris Road,
Nuffield Industrial Estate
Poole, Dorset BH17 0GG
United Kingdom

+44 800 808 5480

Trade Association

  • LRWA
  • DIBt
  • NFRC
  • EOTA
  • BPA
  • BBA