Radiant Barrier is a secondary insulation meant to compliment, but not replace, your primary attic-floor insulation. It is not a substitute for attic insulation but rather something that works alongside a solid R-38 of Cellulose, Rockwool, or Fiberglass. It’s also the best choice for insulating most garages.

We install a Radiant Barrier material, which is often described as looking like a fabric sheet of aluminum foil, directly under the roofing, attached to the bottom of the roof rafters. This will reflect and refract upwards of 90% of radiant heat, reducing the temperature inside the attic which in turn helps the insulation work better and keeps your A/C ducting cooler.
It’s important to note that Radiant Barrier should ideally be installed prior to insulation when the attic is empty. This is because it requires extensive movement around the attic which can be challenging to do when insulation is present. In some instances, we can install Radiant Barrier when insulation is present, and take these jobs on a case by case basis.