Exterior Walls | Roofs | Atria Building Envelope materials should be designed for sustainability, as well as protection from the elements. Finding that perfect balance of the two has always been a struggle for the construction industry. Not anymore. GreenTech Roofing has proprietary building envelope design materials that will outlast even the toughest competition. Our in-house testing facility has proven our membranes surpass the competition in longevity and durability. Don’t believe it? We welcome you to our chemistry lab to see first hand how our testing equipment demonstrates the difference in the quality of membranes, underlayment, paint and tile. Don’t spend money on a new building until you have tested the sustainability of your building envelope materials.