Should I reseal the basement walls prior to installing rigid foam?
Hi everyone, I’m planning on installing 2″ of Dow Thermax rigid foam on the interior walls of my basement and the wall that is against living space in the garage. I got inspired by Marc Rosenbaums article on his installation. The walls were previously sealed by another homeowner. Should I clean them up and apply another coat of waterproofer or can I install the foam over the walls the way they are? Thanks in advance for any info.
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