Commercial Roofing, Flat Roofs
The climate of Upstate NY is not hospitable to flat roofs. The heavy snow loads and constant freezing and thawing cycles can wreak havoc with flat or low slope roofs. For this reason, we at Alpine don’t do the cheaper “rolled roofing” which is fine in other climates. We just can’t guarantee it for any substantial amount of time. While there are many different systems to choose from, the one we generally like to use is EPDM (commonly referred to as a “rubber roof”). Alpine Roofing is an authorized and factory trained Versico Installer.
EPDM rubber (ethylene propylene diene Monomer (M-class) rubber), is a type of synthetic rubber, very tough and elastic. There are many benefits to EPDM, including its outstanding weathering characteristics, flexibility, durability, hail resistance,low maintenance and easy repair options.
It is a a single ply membrane usually 45 or 60 mils thick which can be ballasted (loose laid and held down with stone), fully adhered or mechanically attached. We at Alpine prefer to install the thicker 60 mil membrane with the fully adhered system, which means it is glued down to the substrate at every point, not just the seams. Because we are a manufacturer certified installer, we can offer a 20-year warranty on the membrane and workmanship with a fully-adhered application. If necessary, or more appropriate, we can also install mechanically attached systems. The benefits of mechanically fastened EPDM are use of large-scale EPDM panels, fewer splices, quick installation, and light weight.
Installing an EPDM roof also offers the owner an opportunity to increase the insulation value of the roof. Special roofing poly-isocyanurate insulation (foam boards) are often installed under a layer of EPDM. Each 1″ layer of ply-iso has an R-value of 7. Most new construction buildings specifications call for at least 4.5 inches of insulation in the roof, providing an R-value of 31.5. EPDM is also available in white for a cooler roof with an Energy-Star rating.