Separating house from rubble (fieldstone) wall: can I use Azek?
The house I bought last year has a fieldstone wall and I am undertaking another round of repairs this fall. I have read that it is possible to jack up the sill of the house all around in order to put a capillary break between the fieldstone wall and the wood framing members of the house. See:
This seems like a good idea in our case; the building science document describes putting a form of plastic as a membrane to protect the framing of the house from the stone below.
It would be even better for us if we can use a thicker product so that the house would be permanently lifted by 1/2 inch to 1 inch when we are done. This would make it easier to fit floor joists under the first floor, right now there is only a 6 3/4 inch gap between the basement roof and the foundation, not quite enough to fit 2″ x 8″ (or 4″ by 8″) lumber.
Has anyone used asek for this?
Or high density xps?
Any advice on this would be appreciated.
p.s. I read elsewhere that the compressive strength of wood is above 2000 psi while the compressive strength of Azek is 1000psi. Of course, wood with lots of insect holes is probably a lot weaker than Azek and that is what we are dealing with in a few places.
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