Roof-Fast Base MA is constructed using an inorganic reinforcing mat of durable, high strength non-woven glass fibers, which is coated and impregnated with SBS modified bitumen. The surface is covered with a thin poly-film, while the underside is sanded to prevent sticking in the roll. Roof-Fast Base MA can only be used as the base sheet in a Roof-Fast system. When used with a cap sheet. 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.