This Iko(TM) product consists of a resilient, high-strength cellulose fiber mat that has been saturated with premium waterproofing bitumen to produce AM #15 Lined Asphalt Felt, a superior building material used specifically as a residential roofing underlayment. Line markings are positioned on the surface of the rolls to aid in the horizontal alignment of 3-tab metric shingles. This product complies with ASTM D4869 Type I in all respects, and satisfies building code requirements for an underlay felt (and eave protection when cemented in two plies). IKO?s roofing products are produced and designed with consideration for environmental responsibility and sustainability, incorporating quality recycled components whenever possible, manufactured in facilities that comply with the most stringent government environmental regulations, and can therefore be a part of any ?green? construction project. It comes in roll 36" x 144' and the coverage area of this product is 432 ft².