Gcp Roof Underlayment Spec

Grace ultra self adhered roofing underlayment features a unique 100 butyl adhesive formulation.

Gcp roof underlayment spec.

The thickness of product makes it easy to handle and apply. The blue 360 sm field advantage program includes consultations with our field sales and technical service teams who help architects and contractors select the optimal underlayments to meet their specs. The product is 30 mils 0 76 mm thick making it easy to handle and apply. Tri flex 15 underlayment is attached to the roof with roofing nails or staples both having 1 inch diameter plastic metal caps spaced at 8 inches on center oc on both side and end laps in normal wind zones.

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. Contractors and architects also enjoy the benefits of the blue 360 sm field advantage program. In high wind zones or coastal applications double the fastening to 4 inches oc. Heat resistance up to 300 f 100 butyl adhesive is ideal for use in elevated temperatures for copper zinc roofs or any application where superior heat resistance is required.

Learn how to install tri flex for maximum performance. Install grace ice water shield roofing underlayment directly on a clean dry continuous structural deck. Thermal resistance to 260f. Grace ultra butyl roofing underlayment is composed of two waterproofing materials and aggressive 100 butyl rubber adhesive backed by a layer of high density cross laminated polyethylene film.

Prior to membrane application remove dust dirt loose nails and old roofing materials. Exceptional uv resistance allows it to be exposed for up to six months before installing the final roof covering. Slippery when wet or covered by. Grace ultra roofing underlayment is a unique waterproofing solution that matches the long term durability of copper roofs.

Grace ice water shield self adhered roofing underlayment is a premier membrane composed of two waterproofing materials an aggressive rubberized asphalt adhesive backed by a layer of slip resistant coated high density cross laminated polyethylene film. Apply the membrane to the entire roof deck for wind driven rain protection. Our team also recommends compatible weatherproofing products from our extensive portfolio such as. Suitable for use in the most extreme conditions including under copper cor ten and zinc roofing.

Apply a new layer of grace ultra underlayment directly over the old gcp self adhered underlayment gcp granular underlayments in retrofit applications following the standard membrane application procedure.