Modified Bitumen Flat Roof Install & Repair Near You in Albany, NY

Modified bitumen, or mod-bit, is asphalt reinforced with polymers and built up in layers. A full system starts with a base sheet mechanically fastened or adhered to the deck, adds one or two interply sheets for redundancy, and finishes with a granulated cap sheet that shields the asphalt from UV. Two grades dominate: SBS, a rubberized membrane that stays flexible in cold and is usually cold-applied or hot-mopped, and APP, a plastic-modified sheet that is torch-down welded and thrives in heat. For Albany's freeze-thaw winters, Mastaba Roofing most often specs SBS so the membrane expands and contracts without splitting.

Where mod-bit fails, it almost always fails at the details: laps that were never fully bonded, blisters from trapped moisture, and tired flashings at curbs, drains, and parapet walls. Our crews reinforce every seam, set proper flashing detail at penetrations, and pitch the surface to the drains so water moves instead of ponding. A new multi-ply roof typically runs $6 to $12 per square foot installed depending on tear-off and insulation, while targeted repairs start near $450, and a well-built system lasts 20 to 30 years. Whether you need a fresh install or a leak chased down, our work is fully insured and backed in writing.

• New SBS and APP install, base sheet, interply, and granulated cap sheet for multi-ply durability
• Repairs for blisters, split laps, thermal cracks, and failed curb, drain, and parapet flashings
• Every install and repair fully insured and backed by a written warranty near you