Watertight Wall Underlay

Appraisal number 939
Issued
Last updated 8 Apr 2026
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Description

Watertight Wall Underlay is a synthetic wall underlay for use as a flexible wall underlay under wall claddings on timber and steel-framed buildings. The product consists of a micro-porous, water-resistant polypropylene film laminated between two layers of spun-bonded polypropylene and is coloured grey.

Consenting instructions

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

Appraisal holder details

Techno Wrapping Systems Ltd

warehouse
PO Box 516, Silverdale, North Auckland 0944
phone_enabled 09 426 4748