Shopping Cart

Your cart is empty.

Your cart is empty.

CertainTeed WinterGuard HT Waterproofing Underlayment - Single Roll

Free shipping on orders over $29.99

$277.17

$ 99 .00 $99.00

In Stock

1.ItemPackageQuantity:1


  • Roll Length: 65 feet Roll Width: 3 feet
  • Roll Coverage: 195 square feet Roll Weight: 53 pounds /roll
  • Roll Thickness: 45 millimeters typical Compliance Codes: Meets ASTM D1970
  • Do not expose WinterGuard permanently to sunlight. Cover WinterGuard as soon as possible with a permanent roof surface. The maximum exposure time is 6 months.
  • Do not apply WinterGuard over shingles or underlayment of any sort.
  • WinterGuard may become slippery under certain weather conditions. When this occurs, avoid walking or crawling on the product.
  • WinterGuard will not adhere to wet or cold surfaces. For cold weather tack down, use only roofing nails. Under no circumstances should staples be used with WinterGuard products.
  • Store WinterGuard rolls in their packaging in a dry, protected area at a temperature not exceeding 110°F.
  • Low-slope application: WinterGuard HT can be applied beneath shingles, slate and mechanically fastened tile to acceptable decks with slopes of 2 inches / 12 inches or greater and beneath metal to acceptable decks with slopes of 0.5 inch / 12 inches or greater.
  • WinterGuard is warranted against manufacturing defects and to remain watertight for the same period as the warranty duration carried by the roofing product applied above it – up to a maximum of 50 years.


The CertainTeed Winterguard ProHT Waterproofing Underlayment is an advanced, self-adhering, high-tack, high-temperature membrane that is made to withstand high roof temperatures up to 250F under metal roofs. It is designed for application underneath low-slope shingle, low-slope tile, low-slope metal, and low-slope slate roofs and is composed of a sturdy support that is impregnated and coated with asphalt that is SBS-modified. Winterguard HT has a film on the top that is tear-resistant and will not scratch the metal roofing that it is placed under. The bottom surface of the Winterguard is adhesive, and it is covered with a release film that is silicone-coated. This release film is also split down the center horizontally for easier application. Winterguard can not be left uncovered for more than 6 months. Please Note: WinterGuard is a vapor barrier. Therefore, if WinterGuard is applied over a majority of the roof deck, proper deck ventilation must be provided. If WinterGuard must contact sealants or cements, use solvent-based products sparingly, following the manufacturer's instructions carefully. Excessive use of solvent-based adhesives can damage WinterGuard's polymer-modified asphalt coating. Do not use silicone-based sealants, as they do not maintain adequate long-term adhesion to asphalt.


Recommended Products

$459.00

$ 99 .00 $99.00

4.5
Select Option

$115.18

$ 45 .99 $45.99

4.7
Select Option

$101.97

$ 40 .99 $40.99

4.6
Select Option

$6.98

$ 2 .99 $2.99

4.9
Select Option

$56.93

$ 25 .99 $25.99

4.4
Select Option

$6.66

$ 2 .99 $2.99

4.4
Select Option