Products / Epistik SA-250

A 100%-synthetic, film-surfaced, high-temperature-under-metal self-adhered roofing underlayment, 50 mils thick, built with a 3-layer, deep-embossed, non-woven blue top surface coated with SBS-modified bitumen. It carries a 3-inch overlap edge, is rated for use under metal, shake, concrete tile, slate and asphalt shingles, and the spec sheet reports thermal stability to 260 degrees F and a 180-day UV exposure limit.