Attic Foil Vs Reflectix

Reflectix website claims 2 layer approach in crawl space like this is similar to r21 fine for my application.

Attic foil vs reflectix.

The reason is that the radiant heat is coming from the roof and you re trying to stop it from getting into the attic. Attic foil on the roof leaving the gable vents and ridge vents open. The bubble wrap foil heats up but doesn t radiate that heat to the attic. Reflectix foil insulation e shield low e radiant guard rfoil tempshield eco foil insulation tekfoil reflective insulation energy shield insulation and solar guard vs.

With ducts foil faced bubble wrap will work as a radiant barrier in the winter when the ducts are moving warm air and the surrounding space is cold. Are foil foam foil bubble wraps fiberglass foil products better. 48 wide perforated double sided radiant barrier foil best selling. Reflectix s stated r 14 r values for exterior walls are good only if the reflectix is paired up with r 13 fiberglass batt insulation.

26 wide perforated double sided radiant barrier foil for trusses. For example the r 6 1 masonry value is only good if you provide two 3 4 inch airspaces one between reflectix and the masonry wall and another space between the drywall and the reflectix. Reflectix products are an excellent energy efficient choice for upgrading your attic system. Installation instructions and illustrated drawings are recommendations only while proper local construction methods are the responsibility of the installer.

Therefore when a radiant barrier is installed in a residential attic it blocks 96 of the radiant energy that is being radiated by the hot roofing materials. Before 2nd foil layer then 3 4 in airgap then t g wood. All of the radiant barrier appear to be quality products each prevents radiant heat transfer the primary source of heat flow. Or should a switch 1 of my laters with 1 5 inch rigid foam panel between rafters results in roof.

This equates to a cooler attic resulting in a house that requires less air conditioning usage to maintain comfortable inside. How does atticfoil compare to eshield reflectix prodex bubble foil etc.