MFM Building Products, a manufacturer of a full envelope of waterproofing and weather barrier products for the building industry, recently announced that its 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 “self-stick” roofing underlayment is composed of a cool white, non-slip, cross-laminated, high-density polyethylene film laminated to a high temperature rubberized asphalt adhesive system. This premium product is extremely tough and 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 excellent 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 aggressively adheres directly to the roof deck and self-seals around roofing fasteners. Product is rated to 121°C maximum service range.
Ultra HT has a thickness of 45 mils and is available in a 91cm x 20.4m roll. Ultra HT comes with a 10-Year Limited Warranty.
For full technical data, installation instructions or to request a FREE product sample, visit the company’s website at www.mfmbp.com.