Gcp Roof Underlayment Spec

Thermal resistance to 260f.

Gcp roof underlayment spec.

Install grace ice water shield roofing underlayment directly on a clean dry continuous structural deck. 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. Slippery when wet or covered by. Grace ultra delivers best in class waterproofing protection and the highest level of thermal stability 300f.

Learn how to install tri flex for maximum performance. Suitable for use in the most extreme conditions including under copper cor ten and zinc roofing. Prior to membrane application remove dust dirt loose nails and old roofing materials. Tri flex is a mechanically attached roofing underlayment that can be applied under nearly any roofing material shingles tiles slate metal and more.

Grace ultra roofing underlayment is a unique waterproofing solution that matches the long term durability of copper roofs. 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. Our team also recommends compatible weatherproofing products from our extensive portfolio such as. Apply the membrane to the entire roof deck for wind driven rain protection.

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. In high wind zones or coastal applications double the fastening to 4 inches oc. Some suitable deck materials include plywood wood composition wood plank metal concrete and gypsum sheathing. The product is 30 mils 0 76 mm thick making it easy to handle and apply.

Contractors and architects also enjoy the benefits of the blue 360 sm field advantage program. 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. 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 thickness of product makes 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.