MFM Building Products has announced that the Ultra HT Wind & Water Seal high temperature roofing underlayment complies with CSA 123.22-08 “Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection.” The evaluation was completed by Canada Construction Materials Centre (CCMC) Evaluation Listing 14048-L.
This self-adhering roofing underlayment is composed of a white, non-slip, cross-laminated, high density polyethylene film laminated to a high temperature rubberized asphalt adhesive system. This product is durable, and offers a 90-day UV exposure rating.
Ultra HT is engineered as a whole roof underlayment for use under all roofing systems, including metal where high heat is generated. Product rolls out smooth and lays flat while offering the contractor foot traction. Ultra HT comes with a split release liner for use in valleys, ridges, around chimneys and at eaves for protection against ice dams, wind-driven rain and water penetration. Ultra HT adheres directly to the roof deck and self-seals around roofing fasteners. The product is rated to 121C maximum service range.
Ultra HT has a thickness of 45 mils and is available in a 91 centimeter by 20.4 meter roll. Ultra HT comes with a 10-year limited warranty.
For technical data, installation instructions or to request a free product sample, visit the company’s website.