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Tag Archives: Insulation Hayward Radiant Barrier

Radiant Barrier Insulation

Posted by Derrick Hansen in Roof MaintenanceSaving Money

A very inexpensive way to improve the energy efficiency of your home is to have us install R-foil Radiant Barrier Insulation under our stone-coated metal roofing.  The labor to install this material during the roof installation is very affordable so most of the cost is just the purchase of the material itself.

How it Works

Heat travels from a warm area to a cool area by a combination of conduction, convection, and radiation. Heat flows by conduction from a hotter location within a material or assembly to a colder location, like the way a spoon placed in a hot cup of coffee conducts heat through its handle to your hand. Heat transfer by convection occurs when a liquid or gas — air, for example — is heated, becomes less dense, and rises. As the liquid or gas cools, it becomes denser and falls. Radiant heat travels in a straight line away from any surface and heats anything solid that absorbs its energy.

When the sun heats a roof, it’s primarily the sun’s radiant energy that makes the roof hot. Much of this heat travels by conduction through the roofing materials to the attic side of the roof. The hot roof material then radiates its gained heat energy onto the cooler attic surfaces, including the air ducts and the attic floor. A radiant barrier reduces the radiant heat transfer from the underside of the roof to the other surfaces in the attic.

For our customers with newer homes,  R-foil is generally not necessary because todays building codes require R-38 to R-50 attic insulation and adding reflective insulation will not improve the energy efficiency of the home enough to justify the additional cost.  However,  our customers with older homes,  homes having ice dam problems,  and homes with cathedral ceilings see a substantial improvement both for summertime heat gain and winter time heat loss.

Ask myself or Bruce about R-foil and we can include it as an option on your proposal!

 

 

 

 

 

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