Majvest® Airtight & Breathable Membrane for Walls (W1) - Breather membrane
Verified by manufacturer 1 month ago
Majvest® 500 SA airtight & self-adhesive
Majvest® 500 SA airtight & self-adhesive
Diffusion-open, windproof and rainproof façade membranes.
Application
Suitable for permanent protection of the external wall structure and maintaining the functionality of the thermal insulation.
Description
Diffusion-open, windproof and rainproof façade membranes.
The range comprises:
- Majvest® 200: Multi-layer, diffusion-open façade membrane, proof against driving rain, for use behind sealed façade cladding.
- Majvest® 500 SA airtight and self-adhesive.
- Majvest® 700 SOB: (B-s1,d0) UV resistant. Black, diffusion-open and driving rain-proof sheet perfectly suited for the protection of building envelopes with permanently open facades.
General information
Color | Blue Black |
Finish | Matt |
Material | Polypropylene |
Length | 50000 mm 33300 mm 30480 mm |
Width | 1500 mm 3000 mm 457.2 mm 1524 mm |
Height | 0.5 mm |
Warranty description | Ten year |
Uniclass | |
CAWS | H92/785 Breather membrane H20/10 Sheet cladding P10/65 Breather membrane H30/10 Fibre cement H21/20 Breather membrane H21/15 Horizontal timber weatherboarding H21/10 Vertical timber weatherboarding P10/320 Breather membrane H92/120 Rainscreen cladding M30/265 Building paper H30/110 Fibre cement H21/130 Breather membrane H21/116 Horizontal timber weatherboarding H21/115 Vertical timber weatherboarding H21/111 Horizontal timber weatherboarding H21/110 Vertical timber weatherboarding H20/155 Sheet cladding (attached to timber battens) H20/150 Sheet cladding (attached to metal support systems) |
Specification data - Vapour-permeable sheets
Standard | To BS EN 13859-1, BS EN 13859-2. |
Performance criteria | |
Water vapour properties | Not applicable. |
Fire performance | To BS EN 13501-1, Class E. |
Tensile properties | Not applicable. |
Class (minimum) | W1 (to EN 1928). |
Material | Three layered; microporous functional layer, reinforced on both sides with polypropylene (PP). |
Form | Non-woven. |
Weight (minimum) | Approx. 360 g/m².Guidance for specification option: 1.524 x 30.48 m. |
Thickness (minimum) | 0.5 mm. |
Temperature resistance | -40 to +80°C. |
Elongation | Not applicable. Manufacturer guidanceAt maximum tensile strength: |
Tear resistance | Not applicable. Manufacturer guidanceNail shank: |
Resistance to air penetration | Fully airtight as tested by the Passivhaus Institute. |
Colour | Blue. |
Dimensions | 1.524 x 30.48 m. 0.4572 x 30.48 m. Manufacturer guidanceRoll width x length. |
Sustainability data
Contains Red List materials | No |
Country of material origin | Switzerland |
Country of product manufacture | Switzerland |
Material | Polypropylene |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |
Expected Life | Lifetime |