When the sun heats a roof it s primarily the sun s radiant energy that makes the roof hot.
Reflective roof barrier.
Radiant barrier sheathing made up of either plywood or oriented strand board osb with athin layer of aluminum facing on one side is installed to the roof rafters with the aluminumlayer facing down.
Radiantguard radiant barrier foil insulation installed in an attics can reduce attic temperatures by up to 30 degrees when stapled with a staple gun to the underside of roof rafters by reflecting up to 97 of the radiant heat that strikes its surface thereby reducing heat.
Much of this heat travels by conduction through the roofing materials to the attic side of the roof.
If the radiant barrier had been installed inside of the attic either on the underside of the roof rafters or the underside of the roof decking it would provide the heat reflective properties you want.
Lo mit is a silver colored non thickness dependent low emissivity paint which may be used in almost any application where infrared heat reflectivity or diffuse light reflectivity is required.
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Other kinds of radiant barriers combine reflective materials usually aluminium foil with materials like plastic films cardboard and kraft paper.
Reach barrier reflective air garage door insulation kit model 3009 43 78 43 78.
500 sqft 4ft x 125ft of nasatech commercial grade solid non perforated no tear green energy radiant barrier reflective insulation attic foil roof attic house wrap scif rifd.
The most effective radiant barrier sheathing is a structural roof sheathing panel which consists of an osb panel with heat reflecting foil laminated to one side.
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The attic under the roof.
As an added plus weyerhaeuser rbs can even help keep non air conditioned uninsulated rooms like garages.
Double reflective insulation roll with staple tab edge model st48100.
Instead of reflecting the radiant heat the barrier would simply transfer it to the roof decking in the attic space.
The aluminum is not used for its reflective properties but for its low emittingproperties.
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Weyerhaeuser radiant barrier sheathing rbs comes pre fabricated with a reflective foil layer that reflects up to 97 of the sun s radiant energy minimizing heat transfer through the roof and insulation to interior living spaces.
Radiant barrier installation attic radiant barrier installation most of the heat entering a home comes through the roof.