Attic Foil R Value

Atticfoil works to block radiant heat 97 coming in to the attic by stapling it to the rafters but it has no r value.

Attic foil r value.

Let s take a look at the actual r value of eshield solarguard prodex and bubble foil products. Add insulation to attic. Air inherently has an r per inch value of 5 6 and is an excellent insulator when radiation and convection are controlled. An r 13 batt of fiberglass insulation is 3 5 thick.

Recommended insulation levels for retrofitting existing wood framed buildings. 48 wide perforated double sided radiant barrier foil best selling. Studies have found the following about radiant barriers to be true. A tennessee valley authority study based on radiant barriers used in the summer found that.

Traditional attic insulation has r value. Achieving greater r values in exterior walls. R values for reflective insulations are dependent. 26 wide perforated double sided radiant barrier foil for trusses.

In summary you increase the r value of your existing insulation by installing a radiant barrier foil insulation product. This is important to understand because radiant barrier does not take the place of traditional insulation fiberglass cellulose etc. Reflectix can provide verification for all r values stated for all products and applications. What is the r value of your radiant barrier.

What about r values for a reflective insulation and why do they vary with application. Most are about a thick or less. Existing 3 4 inches of insulation. Products 60 48 26 rolls.

The higher the r value the more resistant a material or building assemblage is to conductive heat transfer. This might surprise you but radiant barrier foil on its own has no r value. More information about r value and radiant barriers. This works to slow conductive heat.

The higher the r value the better the thermal performance of the insulation. Radiant barrier on its own has no r value. Standard foam board by dow chemical or owens corning has a known r value of between 5 and 6 per inch.