So I have been doing some checking into Duro-Last PVC and how it stacks up with two Firestone versions of TPO and EPDM. I picked Firestone because they are known for quality and have white TPO and EPDM. The first thing that is great is that they are all cool white roofs. They all have high solar reflectance and will save you money however Duro-Last has by far the highest. Second only Duro-Last can withstand Animal fat TPO and EPDM will basically get eaten alive by Animal Fat. When it comes to ponding water Duro-Last wins to with its fully ponding water covered 15 year no dollar limit warranty. Both other products warranty are void with ponding water. Then there is the fact that Duro-Last manufactured over 85% in factory with few seams vs the other two being rolled goods that have nothing but seams. There is also the Fire risk of roofing some roofs can catch fire and cause the entire building to burn. Duro-Last will not continue to burn once the flame is not in contact with it while TPO and EPDM not to mention BUILT ROOFS will continue to burn until they are gone once flame is in contact with them. Lastly are the reinforcement the TPO and EPDM didnt come close to Duro-Last which is reinforced with scrims cross threaded for strength. If it is up to me I will choose Duro-Last every time for quality, energy savings , and consistency.
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