Facade Waterproof Breathable Membrane
Facade Waterproof Breathable Membrane
KOSITE facade membrane roll goods provide water-resistant and vapor-permeable protection behind exterior cladding and ventilated facade systems.
UseExterior facade and cladding support
GSM / Basis Weight90-260 gsm, selected by cladding and exposure requirement
Roll WidthCommon 1.0-3.2 m; custom width by project
Roll Length50 m, 100 m or custom roll length
ColorBlack, grey or project color option
FunctionWater resistance with vapor permeability
SupplyRoll goods with OEM packing options
SupportSamples, data sheet and quotation follow-up
Product Highlights
- Helps protect sheathing from outside water behind facade cladding
- Supports vapor movement in wall assemblies that need drying potential
- Roll width, GSM, color and printing can be confirmed before order
Material Knowledge
- Facade membrane is used behind exterior cladding where a wall assembly needs weather protection and vapor-permeable support.
- Important buyer checks include water resistance, vapor permeability, tear strength, UV exposure time, roll width and packing method.
- For project use, laps, window openings, penetrations and edge details should be sealed according to the wall system design.
Buyer Checks Before Ordering
- Confirm whether the facade uses open-joint or closed-joint cladding, the cavity depth and the expected weather exposure.
- Define the required membrane color, visible-joint appearance, mechanical strength and any project fire-performance route before quotation.
- Review water resistance, vapor permeance, tensile, tear and UV-exposure data as part of the full facade system.
- Confirm roll format, printed side, label, packing and sample requirements before production.
- Verify the window, penetration, corner and base details with compatible tape and flashing materials before cladding closes the wall.
Related Technical Resources
Use these application notes with the selected product data sheet and project specification.
Why a Drainage Cavity Matters
How cladding, a ventilated cavity and a membrane form a water-managed wall.
Facade Membrane and Wall WRB Application Guide
Window-flashing, cladding-cavity and exterior-wall continuity reference.
WRB Installation Guide for Water-Managed Wall Systems
Installation guidance for openings, transitions and the drainage plane.