GoldSeam Tape is a polymer modified bituminous sheet material intended for use as underlayment. Underlayment is manufactured as a fiberglass mat impregnated and coated with modified bitumen, with a self-adhesive underside and a polymeric film surfacing. Underlayment rolls have approximate dimensions of 66ft-8in x 4-1/4in. Underlayment is self-adhered.
Product has met specification requirements of ASTM D1970.