Matt explores the wa.
Water leak spray foam insulation.
My best answer is based on economics if your house has room for the required r value that you desire or is required by code spray open cell foam.
Using expanding polyurethane foam is one of the best ways to stop water leaks because the foam will expand into the cracks and help prevent future leaks.
When you use closed cell spray foam it seals these cracks and water begins to pool in that area.
Icynene spray foam insulation will stop water leaks in their tracks.
We are looking at the differences between open and closed cell spf.
Do not seal over that old stuff that will cause mold issues down the road.
Spray down 1 inch of closed cell foam it green and then pile batts back on top new if the stuff you pulled up was garbage.
Fix water leaks with expanding foam.
The cure is to determine the cause of the leaked in the first place.
You don t need chisels or drills as the polyurethane will enter into any existing cracks and seal them.
It may be hydroscopic pressure from the outside which leaks through the walls which would require foundation work.
Aside from keeping out the cold and wet it also.
And no one can guarantee anything beyond their product for falure if the roof leaks and the insulation traps water the insulation manufacture is going to blame the roofing company and so on.
Cpvc chlorinated polyvinyl chloride is a common form of plastic piping used for hot and cold water in homes and buildings and is also often used in fire suppression sprinkler systems.
Certain chemicals commonly found in spray foam insulation are not compatible with cpvc piping.
It seals any cracks or crevices and repels the water protecting the wood more effectively.
Those chemicals include but are not limited to.
Spray foam has been used and installed in various places where water is a consideration such as the underside of roof decks for decades and there is no record of it causing deterioration to the wood even when the wood gets wet.
They also now offer a special black insulating foam sealant that is intended for both indoor and outdoor use.
Eventually the water will find another route into your basement by creating more cracks.