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Tamko TW Underlayment
Brand: Tamko Building Products LLCTAMKO® TW Underlayment is a flexible, self-adhering SBS modified bitumen roofing underlayment with a polymer film on the surface and a removable, treated release film on the adhesive side.
Features- Textured, skid resistant surface
- Adheres to cast-in-place concrete, pre-cast concrete, masonry block, exterior gypsum sheathing, plywood, OSB, DensGlass®, felt-faced and foil-faced polyisocyanurate foam insulation, wood or metal surfaces.
- Treated release film
- 5-year Limited Warranty and Arbitration Agreement
Specifications
UL Classified in Accordance with
- ASTM D1970
Florida Building Code Approved
- FL12328
Roll Size
- 200 sq. ft.
Roll Coverage
- 179.82 sq. ft.
Roll Dimensions
- 39 3/8” x 61'
Rolls per Pallet
- 36 rolls
Adhesion to Plywood at 75° F
- ASTM D1970
- ≥ 12 lbf/ft. width
Moisture Vapor Permeability
- ASTM E96 (BW)
- ≤ 0.1 perms
Maximum Load
- ASTM D1970
- ≥ 25 lbf/in.
Elongation Modified Bitumen Portion
- ASTM D1970
- ≥ 10 %
Low Temperature Flexibility
- ASTM D1970
- -20°F
Thickness
- ASTM D1970
- ≥ 40 mils