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Is it possible to spray foam in a finished wall? Say by cutting a hole in the top of the drywall and spraying down? Or do I need to take all the drywall down? Or would another option be better (blown in insulation)?
I have 2 rooms that have crappy old insulation that I can pull out from the basement and wanna re insulate.
I have 2 rooms that have crappy old insulation that I can pull out from the basement and wanna re insulate.