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SIGA Majrex 200 is a high-performance moisture-variable vapour control and airtight membrane designed for installation on the warm side of insulation in wall, roof and ceiling assemblies.
Its unique Hygrobrid® technology provides variable vapour control to help manage moisture within building assemblies, reducing the risk of moisture accumulation that can contribute to mould, rot and structural damage.
Majrex is dimensionally stable for fast, wrinkle-free installation and includes printed cutting and installation guides to simplify layout on site. Each 59" × 164' roll provides approximately 807 sq. ft. of coverage.
Specifications
Brand
Size
- 59" x 164' (1.5 m x 50 m)
Area-Related Mass
- 0.49 oz./ft²
- 148 g/m²
Thickness
- 12 mil / 0.3 mm
Temperature Resistance
- -40° to 176° F (-40° to 80° C)
Tensile Strength
- 34.9 lb/in / 6.1 N/mm
- 27.2 lb/in / 4.8 N/mm
Maximum Tensile Strength
- 270 (310) N/50 mm
- 210 (260) N/50 mm
Direction 1 Water Vapor Variability
- 0.17 (9.2) to 3.8 (217.4) US Perms (Ng/Pa.m². s)
Direction 2 Water Vapor Variability
- 0.16 (9.2) to 1.3 (74.4) US Perms (Ng/Pa.m². s)
Dynamic Diffusion-Equivalent Air Layer Thickness
- < 0.097 to ≥ 4.25 US perms
Smoke Developed Index (Rating)
- 55 (Class A)
Flame Spread Index (Rating)
- 0 (Class A)
Resistance to Water Penetratio
- W1
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