Pvc Roofing Failures

Because of their inherent strength as well as heat welded seams pvc roofs have superior wind uplift resistance.

Pvc roofing failures. One frequent trouble spot is moisture getting below the roofing membrane. Pvc can last well over 30 years. 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. Older pvc roofs in cold weather are prone to shattering.

Pvc on the upper end of the price spectrum there is pvc roofing. It is very easy to repair by welding a patch or re welding seam voids. Hvac technicians window washers painters maintenance staff smokers and tenants. The epdm tpo pvc roof system would have a heat welded seam.

All roof products deteriorate over time and pvc has a tendency to shrink pulling the seams lifting corners and potentially causing leaks. Pvc roofing membranes have passed fm and ul fire testing and have an unlimited slope approval. Punctures can also occur because of debris left blown or tossed on the roof. Section 07 54 19 single ply pvc reroofing.

Pvc s are documented to last longer than tpo membranes who are still experiencing premature failures. To get a better sense of why pvc is a superior roofing system besting its competitors in quality durability and longevity it is important to know a brief history and evolution of pvc roofing membranes. Every ten thousand feet of roof would have approximately 15 000 lineal feet of potential seam failure. A pvc roof is the best choice for low and.

Pvc roofing membranes continue to be the leading product in both commercial and residential flat roofing market. Pvc roofing membranes maintain their flexibility because the formula contains plasticizers as well as salt derived from chlorine the disadvantage of this formula is that with time these plasticizers tend to break down weakening the membrane so that it requires maintenance and repair in order to remain in tact and resistant to leaks. All roofing areas flashings penetrations and equipment shall be included in the work under this section. Thermoplastic membrane pvc roofing july 2017 07 54 19 1 thermal and moisture protection.

The membrane is reinforced which ensures dimensional stability and prevents shrinking or cracking with. Part 1 general 1 1 summary. The most preventable failure symptom punctures usually occur because of carelessness on the part of people visiting the roof. It is a white reinforced membrane with welded seams and flashings.