Quality Roofing Supply, with a location in Reading, Pa., offers a range of residential and commercial roofing products to clients. The company also offers waterproofing products, windows, doors, siding and other residential exterior products. The products include steep-slope roofing systems, such as asphalt shingles, wood shingles, slates, imitation slates and standing seam metals; underlayments, including felt paper and ice and water barriers; and custom metals, such as gutters, downspouts, drip edges, coping, gravel stops, and copper and aluminum sheets and rolls. The company also offers substrates, flat-roof systems and insulations, such as polyisocyanurate, fiberboard and tapered systems. Additionally, it offers air and vapor barriers, pressure-treated lumber, cavity-wall waterproofing systems, doors windows and flashings, expansion joints, and below-grade waterproofing and drainage systems. Quality Roofing Supply also has branch locations in Philadelphia, Lancaster, Yeadon, Eddystone, Lebanon, Allentown and North Wales, Pa., and New Castle and Lewes, Del.