Inside Install with Drywall or Plaster
When installing RetroFoam from the inside, the prep is vital as you don't want to have drywall dust all over everything.
Your installer will make sure all surfaces and items in the area of the home where the injection foam will be installed are covered in plastic.
Once everything is covered, the installer will do a chalk line on the walls and drill the holes centered on that line.
The installer then runs the hose up to the top of the cavity and begins injecting the foam. The hose is run from the top to the middle and from the bottom up to ensure the cavity is full.
Once the foam has been installed, the holes are plugged, and a rough patch of drywall mud is applied.