Can I use TemperGuard instead of regular mass insulation?
There are some vendors that suggest using TemperGuard instead of regular insulation, but we recommend using it in conjunction with regular insulation. This is because they perform two different functions. Regular insulation primarily “slows” down the “conductive” heat transfer, but does nothing to prevent the radiant heat from penetrating. TemperGuard blocks radiant heat, but not conductive heat transfer. A good system utilizes both TemperGuard and regular mass insulation to reduce both types of heat gain or loss.
