The simplest is to lay the radiant barrier directly on top of existing attic insulation, with the reflective side up. This is often called the attic floor application. Another way to install a radiant ...

Insulating your attic walls is one of the best ways to get your home optimal energy efficiency. The amount of insulation ...

Experiments with various levels of conventional insulation show that the percentage reduction in ceiling heat flow due to the addition of a radiant barrier is larger with lower amounts of insulation.

Install a radiant barrier if the attic is prone to overheating in warmer climates. Air seal gaps around plumbing, wiring, or other penetrations to reduce air movement. Adding too much insulation ...