Hi all, I am about ready to start the massive crawl space insulation project for the spring and summer and have been doing a lot (maybe too much) reading at this point. I have read that if installing rigid foam on the interior you need a capillary break between foundation wall and sill plate and footing and foundation wall.
However, my house was built in the 50s, so I’m not sure what the footings look like, and am not sure if what my sill plate is resting on counts as a break, since it rests on small pieces of wood? Should I be concerned about doing my original plan of 3″ polyiso foil faced on the interior block?
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