Majpell Double: The vapor control layer for roof, wall and ceiling structures
Majpell Double is an all-purpose, easy to apply vapour control layer. It is the same as the Majpell 5, except it is double the width for more coverage. In combination with the approved SIGA high-performance adhesives, Majpell provides for permanently airtight building envelopes for roof, wall, and ceiling structures in the interior.
With a fixed perm rating of .68, Majpell will protect the structure by minimizing vapor drive from the interior.
Combining Majpell with the breathable membrane Majcoat (sd value = 0.1 m) ensures perfect moisture transportation with a diffusion gradient of 50:1.
Works with between-rafter and above-rafter insulation. Since it is translucent, it gives you the ability to see or inspect insulation, making it easier to install dense-pack cellulose insulation.
Majpell is sturdy, flexible and dimensionally stable and can be laid quickly, easily and without wrinkles.
With a low perm rating, Majpell is impermeable to water yet has the ability the diffuse water vapor, preventing condensation.
Width: 9.8 ft.
Length (per roll): 164 ft.