SIGA Majvest 200 membrane provides the perfect foundation for durable water-resistive and air-barrier assemblies. Majvest 200 is a mechanically-fastened, 3-ply membrane designed for above-grade moisture control and air barrier applications. Its protective polypropylene fleece layers stand up to the toughest jobsite conditions. A highly vapor-permeable, polymeric inner layer does the heavy multi-tasking: resisting harsh wind-driven rain and snow, while still protecting the wall beneath from condensation build-up.

3-layer, tear-proof and flexible

• Can be laid easily, quickly and securely

Ideal for roof and facade

• For all-purpose application

Cutting and bonding aid

• Time saving

Other Details

• Thickness: 20 mils
• Water vapor transmission: 54 US perms
• Resistance to water penetration: >110 inches
• Maximum UV exposure (IECC Climate Zones 3-8): 3 months