Bestlaminate 3in1 Basic Vapor Barrier Flooring Underlayment w/overlap and tape 900sq.ft. Price per 9 - 100 sq.ft roll 2mm 3in1 Construction. With a pre-attached self-sealing strip and plastic overlap, installation is a breeze! Suitable for wood and cement subfloors Great for laminate & engineered floating floors Fast & Free Fedex Ground