VaporDry® SA Roof Underlayment
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VaporDry SA is one of the only fully self-adhered, vapor permeable underlayments. The continuous acrylic adhesive provides enhanced sealability, while reducing the potential of damage due to moisture build up. VaporDry SA helps to create a high-performance roof assembly when paired with Cedar Breather® Roof Ventilation Mat and Rapid Ridge® 7.
- Can be used with Cedar Breather Ventilated Underlayment for maximum drying potential in wood, metal, and cold roof applications
- Approved for use with all roofing types with a pitch 3:12 or greater
- Provides enhanced protection from the elements during ‘dry-in’ period
- Slip-resistant surface & printed overlap guides for an easier install
- Meets ASTM D1970 testing standard for roofing underlayment
- High temperature self-adhered underlayment: 250°F service temperature
Width
4.75 ft
Length per Roll
80 ft
Composition
Polypropylene Tri-Laminate
Vapor Permeability
14 perms ASTM E96(a)
Adhesion
Continuous Acrylic
Gross Coverage
380 sq. ft./roll
ASTM AC38
Pass