![]() ![]() Radiant barrier sheathing should only be used in cooling climate zones 1, 2, & 3. I had to insist that the door be kept closed to keep the ‘cool’ air inside.” I really expected it to be beyond sweltering when I arrived at 1:30pm. The windows were low quality, dual pane, not Low-E and faced south and west. The building had no ceilings, no wall insulation, and no gypsum board. It was 106 outside!!!! The only possible explanation was the Norbord Solarbord decking. I was completely surprised when I found that the shell building I inspected yesterday was 80- 90 degrees inside. Radiant barriers increase shingle temperature by only a few degrees and do not affect shingle warranties.Įlizabeth D Kaufman, Architect: “I have long been skeptical of radiant barrier products. Radiant barrier sheathing may only cost an additional few hundred dollars per house over regular sheathing and it requires no special tools or trades to install. Cooler attics and more comfortable living spaces improve your cooling system efficiency and prolongs its life by reducing cycle times. This means that your attic stays cooler in hot summer months and radiates less heat into your home which translates into savings on your summer cooling costs of up to 17%. Estimates put a payback for the radiant barrier of 1 to 2 years in energy savings from then on it acts as a passive energy saving system that never wears out.” Dave Lewis from Norbord: “The use of radiant barrier sheathing can reduce the attic temperature by about 30☏. OSB radiant barrier sheathing can reflect up to 97% of radiation and can significantly reduce attic temperatures. That means the home will be more comfortable and the efficiency of attic insulation and the AC system will be improved. The foil surfaces of radiant barriers reflect the heat and prevent it from radiating into the attic space. Radiant Barrier SheathingĪttic spaces are predominantly heated through radiation. Spray foam offers insulation and provides some sound proofing from outside noise. Radiant barrier sheathing is inexpensive and reflects thermal radiation to keep attic spaces cool. A number of factors should be taken into consideration when choosing between these two, especially the climate zone that you’re building in. ![]() When installing attic insulation, a case can be made for both radiant barrier sheathing with typical types of insulation as well as spray foam insulation.
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