The Upside of Using a Garage Door Insulation Kit The simplest way to insulate a garage door is with a kit containing either vinyl- or foil-faced batts or foil-faced rigid foam boards. Garage door ...
If you can’t find the reflective foil insulation (Photo 3), substitute drywall or pieces cut from 4 x 8-ft. sheets of rigid foil-faced insulation. Fitting rigid material requires more precise ...