Attic Foil R Value

You can achieve better thermal performance in your attic by adding an additional layer of insulation.

Attic foil r value. Triple pane windows with low e surfaces perform better than a triple pane window without low e surfaces because of the reduction of radiation low emittance across the air spaces. In summary you increase the r value of your existing insulation by installing a radiant barrier foil insulation product. Let s take a look at the actual r value of eshield solarguard prodex and bubble foil products. What about r values for a reflective insulation and why do they vary with application.

48 wide perforated double sided radiant barrier foil best selling. An r 13 batt of fiberglass insulation is 3 5 thick. What is the r value of your radiant barrier. R values for reflective insulations are dependent.

More information about r value and radiant barriers. Most are about a thick or less. Existing 3 4 inches of insulation. Studies have found the following about radiant barriers to be true.

This works to slow conductive heat. Add insulation to attic. Atticfoil works to block radiant heat 97 coming in to the attic by stapling it to the rafters but it has no r value. R value is attributed to materials slowing conductive heat.

Products 60 48 26 rolls. The higher the r value the more resistant a material or building assemblage is to conductive heat transfer. This is important to understand because radiant barrier does not take the place of traditional insulation fiberglass cellulose etc. This might surprise you but radiant barrier foil on its own has no r value.

A tennessee valley authority study based on radiant barriers used in the summer found that. Traditional attic insulation has r value. 26 wide perforated double sided radiant barrier foil for trusses. Achieving greater r values in exterior walls.

Standard foam board by dow chemical or owens corning has a known r value of between 5 and 6 per inch. Reflectix can provide verification for all r values stated for all products and applications. Radiant barrier on its own has no r value.