How do I insulate my walls without removing drywall?
Injection foam insulation is the answer to insulating walls without removing drywall. There are several types of injection foam available out there, including the RetroFoam product we use. These materials don't require the drywall in your home to be taken down. Can you insulate walls that are already Drywalled? The preferred method is to cut holes between each stud and use an insulation blower to fill the wall with loose insulation.