Roof Repair & Reroofing Services for Commercial or Residential There are many reasons to necesistate a reroofing project. Most roofing systems aren’t meant to last. Roofing manufacturers sell products based on their profitability rather than proven facts. American Standards for Testing Materials (ASTM) has allowed consistent reformulations of roofing membranes due to poor performance, allowing failed products to enter the marketplace. The U.S. Green Building Council (USGBC), under their Leadership in Energy and Environmental Design (LEED) program, gives the same valuation for light and heat reflectivity with zero credits for sustainable chemistry design. At GreenTech Roofing, we test every product we sell for sustainability and durability to insure our customers get the best return on investment for every dollar spent.