SIGA Majvest Double

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Majvest Double is a sturdy and rainproof membrane that provides permanently windtight facades on the outside. The only difference from the original Majvest product is that it is double the width.

To get optimal results from your window flashing detail, Check out SIGA’s:

Ultimate Guide to Window Flashing

Width: 9.8 ft.
Length (per roll): 164 ft.


Majvest Double

Majvest Double is a sturdy and rainproof membrane that provides a permanent windtight facade on the exterior, it is highly tearproof and flexible for safe and easy application. The material is diffusion-open and permanently protects wall construction from condensation build-up. With a width of 1.5 m and the practical cutting and bonding aid, it can be applied very efficiently for all closed facades, making it an all purpose membrane.


Majvest Double is the same as the original Majvest, only double the width, for more coverage.

Majvest is a three layered, facade and roof membrane. It uses a microporous functional layer, reinforced with a layer of fleece on either side with makes it tear-proof and flexible.

The membrane is 1.5 meters wide and includes a cutting and bonding aid printed on the outer layer.

These features make application quick, easy, and secure.

Width: 4.9 ft.

Length (per roll): 164 ft.

Majvest System Guidelines

Majcoat/Majvest/Majpell Eco Certificate

Majvest Technical Data

Majvest MSDS

SIGA Limited Warranty

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