Just as the name indicates, a single-ply membrane is a singular piece of rubber membrane that is installed over the roof substrate to create a water proof roof surface. However, not all single-ply membranes are created equal. Just as it is true with most products, you usually get what you pay for. There are a wide range of single-ply membranes that are available today. It can be very confusing as to what is actually a good quality menmbrane. M.E.B. Systems Inc. has experience with a wide range of the single-ply membranes that are available on the market today. We choose to offer what we feel are the best membranes available.
There are various single-ply membranes on the market today. PVC, TPO, EPDM, CSPE (hypalon) are the main single-plies available. Most single-ply membranes actually consist of two separate plies of rubber that are laminated together with some type of scrim (fabric) embedded in the center. Of the four categories of membranes listed above, EPDM typically does not contain scrim though it is available with scrim reinforcement. PVC, TPO, and CSPE (hypalon) all have hot-air welded seams whereas EPDM is typically seamed with tapes and adhesives. Single plies are typically classified by mil thickness. Mil thickness typically ranges from 30 mils to 80 or even 90 mil sheets. For example a 60 mil sheet is actually 60,000th of an inch thick. It is easy to think that the higher the mils, the better the membrane. While this can be true, it is definitely not a hard and fast rule. A high quality membrane such as Burkeline CSPE which is 45 mils thick will outperform many heavier membranes on the market.
M.E.B. Systems Inc. has been promoting white, reflective, energy efficient roofs since our inception in 1977. Many other companies are finally catching on to what we have believed for many years. White roofs not only reduce cooling costs, but decrease the rate of deterioration of roofing materials due to UV degradation and damage caused by large, rapid fluctuation in temperatures commonly found in metropolitan area urban heat islands