spray foam basement - any benefit to fill cracks and waterproof?
Hi. I'm getting ready to have the unfinished basement in my 1970's home insulated with spray-on polyurethane foam. I plan to do the entire perimeter of the basement and have been told to space the interior walls in about an inch away from the concrete walls. I understand the foam is closed-cell and effectively works as a vapor barrier while providing insulation. There are a few cracks in the basement block wall foundation and I've seen some areas of the walls damp after very heavy rains or primarily when the gutters have unknowingly backed-up. Part of my remolding will include new gutters and improved exterior drainage. My question is regarding waterproofing and weather or not it is worthwhile to do when the polyurethane foam is waterproof and might provide the same function. Does anyone see a benefit of filling the cracks with polyurethane foam or epoxy and/or painting the walls with a product like Drylok? I've been leaning towards doing the extra work, but I'm second guessing myself and my foam contractor isn't recommending the extra work.