Petroleum-free vapor barrier?
I am in the process of building an off-grid home where we plan to pour 3″ adobe floors over a plywood subfloor (with radiant heating in the adobe). In order to do so, we need to lay down a vapor barrier to de-couple the adobe from any floor movement, and to protect the plywood from the moisture that will be in the adobe when it is poured. However, at this point I’m rather appalled by the amount of petroleum based products we have had to use in order to get good air sealing on the exterior envelope (not to mention the mountains of plastic packaging all our materials have come in). So, I’m wondering if there are vapor barrier products out there that are not plastic based. Alternatively, are there any manufacturers that utilize better production practices that are less harmful on the environment than the industry standards?
Any assistance would be greatly appreciated!
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