TRI-BUILT® SMOOTH HT S/A Underlayment is a SBS modified bitumen membrane reinforced with a fiberglass mat. The self-adhesive underface is covered with a split back silicone release film. The top face is composed of a non-slip plastic surface.
TRI-BUILT® SMOOTH HT S/A Underlayment is used as a waterproofing membrane under metal roofing or as an eaves protection under asphalt shingles roofing and other roofing materials.
Apply to clean, dry surfaces of plywood, OSB or asphalt panels. Product can be left exposed up to 60 days under certain conditions.
Application temperature: 40 to 122 °F (4.5 to 50 °C)
Service Temperature: -49 to 220 °F (-45 to 104 °C)
Metal roof underlayment for edges and details:
Eaves protection on medium to high slope roofs
Packaging & Coverage
Rolls of 3 ft x 65 ft (0.91 m x 19.8 m) covering approximately 195 ft² (18 m²).
36 rolls per pallet