Since 1979, National Building & Roofing Supplies in Patchogue, New York, has grown to be a major supplier in the building industry on Long Island. We want to help you find the best products for your job so it’s done right the first time. It’s our aim to make you feel like part of the family when you walk through our door. Our attention to detail, helpful sales associates, superior delivery service, and competitive prices keep our customers coming back job after job.