Pvc Roofing Membrane Problems

Also exposure to plant roots fungi and bacteria have no negative impact on a pvc roofing membrane.

Pvc roofing membrane problems. A pvc roofing membrane is highly resistant to constant dampness ponding water as well as high and low alkaline conditions. Good luck with your project. Pvc s are documented to last longer than tpo membranes who are still experiencing premature failures. Also manufacturers strongly advise against installing epdm in the winter because glue freezes and the roof may leak.

Heat causes faster loss of the plasticizers that are used in pvc to make it flexible. Reported problems included seams coming apart leaks and membrane failures especially when exposed to excessive heat over a prolonged period of time. The good news is that reputable manufacturers have taken care of these issues and astm standards have been critical in achieving the base line of minimal acceptable performance and features. Gaf everguard tpo is a proven membrane and the 60 mil version is a good all around choice.

As noted in the chart below created from rs means data if you compare the life cycle costs of a sarnafil roof estimated to last 35 years versus a tpo roof lasting 20 years pvc is the less expensive choice. Plant roots fungi and bacteria have no negative effect on a pvc membrane. The membrane stands up to constant dampness ponding water as well as high and low alkaline conditions. It is a white reinforced membrane with welded seams and flashings.

Pvc can last well over 30 years. A pvc roof is also resistant to uv radiation strong winds fire and chemicals. Ib pvc flat roof installation. Pvc on the upper end of the price spectrum there is pvc roofing.

Flat roof costs in us. Pvc roofs are distinguished by the way they are put together using hot air welding fusion welding of the seams. All roof products deteriorate over time and pvc has a tendency to shrink pulling the seams lifting corners and potentially causing leaks. Older pvc roofs in cold weather are prone to shattering.

Pvc membranes are manufactured to remain watertight in extreme conditions. Hot air welding creates a permanent physical bond between the sheets that is actually stronger than the membrane itself making pvc roof installation fast and ensuring that critical areas are permanently watertight. A properly heat welded seam is a much better seam than a glued or taped seam.