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Grace Ice & Water Shield Roofing Underlayment
Brand: GCP Applied Technologies IncFor architects and roofing contractors, roofs are a source of everlasting concern. Seventy percent of all construction litigation is related to leaks, and every leak is a lost opportunity, representing a cost to repair and a corresponding loss of customer trust. Severe weather seems to be the new normal and the risk of damage from ice dams and wind-driven rain are higher than ever.
Underlayments are the last line of defense in a roofing system, and selection of high quality underlayments can be the difference between success and failure.
Protecting 2 million roofs in 25 countries, GRACE ICE & WATER SHIELD® has protected the roofs of over 2 million homes, and been installed on marquee projects in 25 countries, since its introduction in 1978.
This high performance solution provides superior performance at an excellent value. GRACE ICE & WATER SHIELD® outperforms the competition, letting contractors shine and keeping families safe and dry.
Features- Superior waterproofing protection
- Embossed surface improves slip resistance
- Convenient center-lines, lap-lines, and measurement markings
- Ripcord split release feature makes it easier to apply at vulnerable details
- Fully adhered roofing underlayment sticks aggressively to deck surface
- Forms a watertight seal around fasteners used to install shingles and other roof coverings
- Forms watertight seal at overlaps
- Protects all standard sloped roofs--slate, tile, shakes or metal, as well as ordinary asphalt shingles
Specifications
Roll Length
- 75 ft (22.9 m)
Roll Width
- 36 in (914 mm)
Roll Size
- 225 ft2 (20.9 m)
Packaging
- Corrugated cartons
Roll Weight
- 61.4 lbs (27.9 kg)
Rolls per Pallet
- 35
Color
- Gray-black
Thickness, Membrane
- 40 mil (1.02 mm)
- ASTM D3767 method A
Tensile Strength, Membrane
- 250 psi (1720 kN/m)
- ASTM D412 (Die C modified)
Elongation, Membrane
- 250%
- ASTM D412 (Die C modified)
Low Temperature flexibility
- Unaffected @ -20° F (-29° C)
- ASTM D1970
Adhesion to Plywood
- 3.0 lbs/in. width (525 N/m)
- ASTM D903
Permeance (max)
- 0.05 Perms (2.9 ng/m s Pa)
- ASTM E96
Material Weight Installed (max)
- 0.3 lb/ft (1.3 kg/m)
- ASTM D461
- Sloped Roofs and Under Mechanically Attached Roof Coverings
- Asphalt Shingles
- Slate
- Tile
- Cedar
- Standing Seam Metal in Many Climate and Assembly Conditions