MFM introduces new high temperature underlayment: Ultra HT

[Coshocton, OH] –  MFM Building Products, a manufacturer of a full envelope of waterproofing and weather barrier products for the building industry, is proud to offer a new High Temperature underlayment – Ultra HT Wind & Water Seal™. This self-adhering “self-stick” roofing underlayment is composed of a cool white, non-slip, MFM Utral HT underlaymentcross-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 asphalt shingle and metal roofing systems. 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 250°F maximum.

Ultra HT has a thickness of 45 mils nominal and is available in a 36 inch width by 67 foot length (2 square) roll. Product meets ASTM D 1970 and Florida Building Code FL16562, and 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

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