Skip to main content

Appraisal number: 581 (2015)

Date issued: 11 Jun 2015

Dampfix 3 Wet Area Membrane


Dampfix 3 Wet Area Membrane is a liquid-applied waterproofing membrane for use under ceramic or stone tile finishes in internal wet areas.


Dampfix 3 Wet Area Membranes have been appraised for use as waterproofing membranes for internal wet areas of buildings within the following scope:

  • On floor substrates of concrete, plywood, compressed fibre-cement sheet and fibre-cement sheet tile underlay and on wall substrates of concrete, concrete masonry, wet area fibre-cement sheet lining systems and wet area plasterboard lining systems.
  • When protected from physical damage by ceramic or stone tile finishes.
  • Where floors are designed and constructed such that deflections do not exceed 1/360th of the span.

The use of Dampfix 3 Wet Area Membranes on concrete slabs where hydrostatic or vapour pressure is present is outside the scope of this Appraisal.

Movement and control joints in the substrate must be carried through to the tile finish. The design and construction of the substrate and movement and control joints is specific to each building and therefore the responsibility of the building designer and building contractor and is outside the scope of this Appraisal.

Ceramic or stone tile finishes are outside the scope of this Appraisal.

The membrane must be installed by Bostik New Zealand Ltd trained and approved applicators.

Technical literature

Dampfix 3 - TDS, Issue 5, 26/11/2014

Consenting instructions

Always refer to the Appraisal in full and the technical literature.

Appraisal holder

Bostik New Zealand Ltd
Phone: 04 567 5119

Marketer details