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simple caulk and sealA technique for insulating and sealing exterior walls that reduces vapor diffusion through air leakage points by installing pre-cut blocks of rigid foam insulation over floor joists, sheet subfloor, and top plates before drywall is installed. See also caulking. Compare with airtight drywall approach. Related category• INSULATION TOPICSAlso on this site: Encyclopedia of Science Encyclopedia of History |