Check out other companies and they suggest that you upgrade to the Duro-last roofing fabric. Supposedly this fabric is great for yurt roofs and the best option. Well, it turns out that Duro-last is a nasty PVC fabric which contains lots of cancer-causing chemicals. From a large commercial yurt company:
“Our premier roof fabric, is a .040 mil (37 oz.) polymer and carries a 15-year manufacturer’s warranty from Duro-Last. Available in gray, white and tan. This upgrade is recommended for all our yurts here in Hawaii due to high UV exposure.”
See how they list it as a “polymer” material, and not PVC? This is common because nobody wants PVC. Below check out this link to the Duro-last Material Safety Data Sheet.
From the Duro-last website: “The Duro-Last vinyl roof membrane is a proprietary thermoplastic formulation consisting of PVC resins, plasticizers, stabilizers, biocides, flame retardants and U.V. absorbents.”
From the Duro-last MSDS: Ingredients –
So you make the choice as to whether you want to find out whether these EHS302 extremely hazardous substance cancer-causing chemicals will be absorbed into your body. This is not to mention the plasticizers, biocides, stabilizers, etc that are in this fabric. Just letting you guys know what is out there. And remember, all Clean Air Yurts are 100% PVC-free!