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USP® 180 HT-NS is a Self-Adhered High-Temperature Underlayment designed and manufactured to be a secondary waterproofing barrier in sloped roof systems. USP® 180 HT-NS is intended to be used where toughness and longer exposure may be required. USP® 180 HT-NS is an air, water and vapor barrier and must be installed above properly ventilated spaces. USP® 180 resists temperatures up to 240°F without degradation of the adhesive. USP® 180 HT-NS is designed to be left exposed for up to 180 days!
| Physical Properties (ASTM D5147): | Test Results | ASTM D1970 Minimum Standard |
|---|---|---|
| Thickness | 42 mills | 40 Mills |
| Tensile Strength (lbf/in), 73°F (MD/XMD) | 82/112 lbf/in | 25 lbf/in |
| Elongation (% @ Max Load), 73°F (MD/XMD) | 35 / 39 % | 10% |
| Adhesion to Plywood, Min at 40°F | 12.5 lbs | 2.0 lbf/ft width |
| Adhesion to Plywood, Min at 73°F | 60.8 lbs | 12.0 lbf/ft width |
| Tear Strength (lbf), (MD/XMD), 73°F, minimum | 149 / 132 lbf | 20 lbf |
| Low Temperature Flexibility, (°F), maximum | -28°F | -20°F |
| Thermal Stability, maximum | 0.0 in | 0.1 in |
| Moisture Vapor Permeance, Max | 0.0 Perms | 0.1 U.S. Perms |
| Sealability around nail | Pass | Pass |
| Waterproof integrity after Low Temperature Flexibility | Pass | Pass |
| Waterproof Integrity of Lap Seam | Pass | Pass |
Thickness:
1.1 mm (45 mils)
Weight:
42.5 lbs. / roll (48 kg/m²)
Roll Dimensions:
36” x 67′ (0.91m x 20.4m)
Each roll is approximately
2 square applied
USP® 180 resist temperatures up to 240°F
without degradation of the adhesive
USP® 180 HT-NS is listed as an approved
alternative underlayment by TDI and is
listed with FBC.
USP® 180 HT-NS replaces the use of #15 or #30 organic roofing felt and is designed f or
residential and commercial use under primary roofing materials such as; asphalt or synthetic
shingles, metal, tile, slate, cement, and primed cedar shakes. USP® 180 HT-NS should be
stored at temperatures between 50 and 90 degrees, upright indoors, in a dry and ventilated
area. USP® 180 HT-NS is applied by removing the poly release film and adhering the
membrane by direct pressure contact to the desired substrate. USP® 180 HT-NS has a shelf
life of 6 months from the date of manufacture, depending on storage conditions. Improper
storage will reduce the shelf life of the product. Warm weather conditions and exposure to
direct sunlight are essential for proper adhesion. Applicati on should be made when ambient
temperatures are 50°F (10°C) or higher. Note: Self-adhered membranes will not activate if
installed in below recommended temperatures and/or if material temperat ure is below 70°F
(21°C). Deck must be clean, dry and free of voids. Cut USP® 180 HT-NS into manageable
lengths before installation. Peel back 1 to 2 feet of the release film and stick the membrane
directly over the roof deck or insulation, unroll membrane and realign at opposite end. Once
set, the film can be removed. Press membrane into substrate to make full contact. Side laps
must be a minimum of 3 in ches and end laps a minimum of 6 inches. Underlayment
180
Method: Align membrane with the gutter edge and extend coverage at least 3 feet inside the
exterior wall or the highest point of damming. Note: When covering the entire roof deck with
USP® 180 HT-NS the roof system must include proper ventilation, including both ridge and
soffit venting. All installed USP® 180 HT-NS must be covered and not left exposed for more
than 180 days.
A pprovals: Texas Department of Insurance (TDI): List of Acceptable Alternative Underlay
ment.
All values given are approximate and are subject to change without notice. There is no implied or express warranty given through these values or statements, nor are there any assertions that the product purchased has been individually tested to conform to these standards. Testing is performed on a random basis by “in-house” and independent “third party” evaluation for the purpose of classification and or approval. Acceptance, purchase and selection of these products are the sole responsibility of the buyer or buyer’s representative. We assume no responsibility for coverage, performance or injuries resulting from use. Liability, if any, is limited to replacement of the product. NO OTHER WARRANTY OR GUARANTEE OF ANY KIND IS MADE BY U.S. PLY, INC. EXPRESSED OR IMPLIED; STATUTORY, BY OPERATION OF LAW, OR OTHERWISE, INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULARULAR PURPOSE.
