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TRI-BUILT® Smooth HT S/A Underlayment

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.

 

 


 

DOCUMENTATION

Description

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)


Recommended Uses

Metal roof underlayment for edges and details:

  • Dormers
  • Valleys
  • Ridges
  • Vents
  • Skylights
  • etc.

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

Additional information

Thickness

47 mil (1.2 mm)

Reinforcement

Glass Mat

Tensile Strength, MD/XD

72.1 / 43.7 lbf/in (12.6 / 7.6 kN/m)

Tear Resistance

103/74 lbf (458 / 329 N)

Roll Weight

49 lb (22.3 kg)

Surface

Anti-Slip Plastic Film

Elongation at Break, MD/XD

29 / 31 %

Underface

Split-Back Silicone Release Film

Static Puncture

83.9 lbf (373 N)

Adhesion to Plywood, 75.2 °F (24 °C)

25.3 lbf/ft (11.5 kgf / 30.5 cm)

Low Temperature Flexibility

-20 °F (-29 °C )

Water Vapour Permeance

0.04 perm (2.4 ng/Pa•s•m²)

Nail Sealability

Pass