Open-cell spray foam for field stone basement wall?
I am finishing a basement in a old home (1850s) in NE PA. Can open cell spray foam be applied to an interior field stone basement foundation wall if the wall has had a vapor barrier such and Grace ice and water shield attached to it? I ask because open cell for one is much cheaper than closed cell and does not have the off gassing and harmful blowing agents that closed cell does. Closed cell however is vapor permeable. I must put in the grace shield due to the small amount of moisture that does weep from two of the foundation walls. The shield moves the water to a french drain below grade that leads to daylight.
Is the spray foam a necessity or can I just put the grace shield on the foundation and then frame up my walls and insulate them? Or will I have problems with moisture condensation which could lead to mold between the new wall and the foundation wall? Any insight would be appreciated. Thank you.
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