||03-02-2013 09:08 AM
closed cell spray foam for waterproofing?
One of my kids has a rowhouse in Baltimore built around the time of the Civil war. The walls are two layers of brick separated by an air space with a perpendicular coarse about every 6 coarse to tie the long ways laid brick together. Some sections of the wall leak after a rain. We are working on regrading to divert the water away from the wall but, I don't think that regrading will be enough to stop the water. There is really not enough room to excavate next to the wall for exterior foundation sealing or a perimeter drain. I am wondering if injecting closed cell insulation into the space between the two rows of brick would effectively seal out the water. Does anyone have any thoughts or experience? Thanks