What does wall membrane do?

Wall membrane helps protect sheathing from outside water while allowing vapor movement in exterior wall assemblies.

What applications are common?

Common applications include housewrap, wall sheathing protection, cladding support and breathable wall systems.

Confirm roll size, GSM, color, printing, packing, label and sample requirements.

Home > Products > Wall Membrane

Wall Waterproof Breathable Membrane

Vapour-permeable (vapor-permeable) wall membrane and housewrap roll goods for exterior wall WRB, water management and outward-drying support.

UseExterior wall and housewrap applications

GSM / Basis Weight80-160 gsm for common wall WRB; higher GSM by project

Roll WidthCommon 1.0-3.2 m; custom width by order

Roll Length50 m, 100 m or custom roll length

ColorWhite, grey, blue or OEM printed option

FunctionWater resistance with vapor permeability

SupplyRoll goods with OEM label and packing

SupportSamples, data sheet and project quotation

Designed for exterior walls where the system needs a continuous water-resistive layer behind cladding or siding.
Helps manage exterior liquid water while supporting outward drying when the wall assembly uses a vapour-permeable design.
Roll weight, width, color, printing and export packing can be matched to a distributor or private-label program.

Start with the wall build-up: cladding type, sheathing, drainage cavity, insulation position and expected construction exposure determine the suitable membrane construction.
Compare water resistance, vapor permeance, tensile and tear performance together. GSM alone does not define installed wall performance.
A reflective foil layer and a vapour-permeable WRB are different constructions. Confirm whether the project needs outward drying or vapor control before comparing foil products.
The membrane must stay continuous at laps, corners, windows, penetrations and base details with compatible tape and flashing.

Confirm the wall build-up, cladding type, drainage cavity and the expected construction-exposure period.
Define the water-resistance, vapor-permeance, tensile, tear and exposure data required by the project specification.
Confirm whether the selected membrane is only a WRB or is also part of a tested air-control detail.
Set GSM, roll width, roll length, color, printing, labels and export packing before quotation.
Review the applicable data sheet, test references and destination-market requirements for the selected construction.
Approve a sample and verify tape, flashing, sealant and substrate compatibility before bulk production or installation.

Use these application notes with the selected product data sheet and project specification.