GRACE ULTRA™ butyl roofing underlayment is composed of two waterproofing materials—an aggressive 100% butyl rubber adhesive backed by a layer of high density cross laminated polyethylene film. The product is 30 mils (0.76 mm) thick making it easy to handle and apply. The unique, advanced adhesive formulation offers premium adhesion to the roof deck, high quality laps, superior seal around roofing fasteners, and unrivaled high temperature stability. The adhesive is backed by a protective plastic release liner that protects its adhesive quality. The release liner is easily removed allowing the adhesive to be bonded tightly to the roof deck. The membrane comes in a 198 ft2 (18.4 m2) roll, and measures 34 in. (864 mm) wide.
Features & Benefits
Heat resistance—The butyl adhesive is specially formulated to withstand temperatures up to 300°F .
Seals around fasteners — The butyl adhesive layer in GRACE ULTRA™ membrane seals around roofing fasteners, resisting leakage caused by water back-up behind ice dams, and from wind-driven rain.
Strong adhesion to the roof deck—The 100% butyl adhesive bonds firmly to the roof deck.
High Quality Laps — The membrane forms watertight overlaps without special treatment.
Better Chemical Compatibility — Compatible with low slope roofing materials such as EPDM and TPO.
Plastic release — Plastic is easy to remove and easy to dispose of.
Application Expertise — GRACE ULTRA™ comes from the makers of GRACE ICE & WATER SHIELD® , and is backed by a team of local technical support personnel to ensure every application goes smoothly.
Last Updated over 4 years
