Can you answer a question about an old home? If not could you recommend someone who can help? This is a house that was built in 1935. It has the stone foundation. What is the cement between the floor joists up against the rim joist for? Is it okay to remove this in order to get a better seal when adding spray foam to the rim joist? Does this cement hold the building in place? Does it keep the building from blowing over in high winds? I had an energy audit and was told I need to have the rim joist sealed but that it will not seal well with this cement. I have attached a picture.