PERM-A-BARRIER Wall Membranes are suitable for shielding the superstructure of a building from the harmful impacts of the elements
PERM-A-BARRIER Wall Membranes: By reducing air and water vapor movement through the building's fa�ade, PERM-A-BARRIER Wall Membranes: Prevent the building envelope from deteriorating prematurely. Improve the thermal efficiency of the building and save money on energy expenses. Increase the comfort of the building's tenants.
The goods of PERM-A-BARRIER must be handled with care. Mastic and solvent-based priming fumes are hazardous and combustible. The best public evidence on proper handling, preservation, personal protection, health, and environmental factors has been compiled for these goods.
- Minimum tensile strength, membranes - 400 psi (2.8 MPa), 400 psi (2.8 MPa), 400 psi (2.8 MPa), ASTM D412 die C modified
- Minimum tensile strength, film - 5000 psi (34.5 MPa), 5000 psi (34.5 MPa), 5000 psi (34.5 MPa), ASTM D412 die C modified
- Minimum elongation, to failure of rubberized asphalt - 200%, ASTM D412 die C modified
- Pliability, at 180� bend over 1 in. (25 mm) mandrel - Pass at -25�F (-32�C), Pass at -45�F (-43�C), Pass at -25�F (-32�C), ASTM D1970
- Nail Sealability - Pass, ASTM D1970
- Crack cycling, 1/8 in. (3.2 mm) at -25�F (-32�C) - Unaffected, ASTM C836
- Minimum puncture resistance, membrane - 40 lbs (178 N)m, ASTM E154
- Lap peel adhesion at minimum application temperature - 4 lbs/in. width (700 N/m), 5 lbs/in. width (875 N/m), 4 lbs/in. width (700 N/m), ASTM D1876 modified
- Air permeance of in-place membrane - 0.0002 cfm/ft2 (L/s/m2), ASTM E2178
- Water absorption (weight gain at 24 hours) - 0.1%, ASTM D570
