It’s a chain reaction that inevitably leads your entire house to become warmer. The ceiling absorbs as much heat as it can before the heat flows to other places like the walls. It’s absorbed by the closest material – your attic ceiling. As a result, after the shingles fully heat, the extra energy needs somewhere to go. Remember, heat is energy, and an item can only absorb so much. A radiant barrier roof reflects heat by using a highly reflective substance, such as aluminum, to line the inside of the attic.Īs the roof shingles get hotter under the sun, they absorb as much heat as possible. How Does a Radiant Barrier Roof Work?Īttics are hot under normal conditions due to the sun’s heat bearing down on the roof shingles. Placing a radiant barrier on the underside of your roof limits heat gain in the attic, which in turn reduces heat in your home’s living space. Lying beneath the sun-exposed roof, an attic accounts for a large amount of square footage inside a home.
A hot air balloon uses convection to rise in the air.Ī significant source of heat transfer into a home occurs in a home’s attic. Convection is the movement of heated fluid, such as air, over a short period of time. This is what happens when a chocolate bar melts in your hand, for example. The transfer of heat through physical contact is conduction. However, unlike thermal insulation materials, barriers do not reduce the other two types of heat transfer – heat conduction and heat convection. Commonly installed in attics, the heat is reflected rather than absorbed by the barrier. The roof radiant barrier reflects this heat and reduces temperatures indoors and cooling costs. This is seen when the heat from the sun intrudes into your home. As a result, heat is transported from the hot item to the cooler item. Radiant heat is a type of heat transfer, which is the transfer of heat or thermal energy between physical items. What Is a Radiant Barrier?Ī radiant barrier roof is a reflecting surface that blocks radiant heat and acts as a barrier between your conditioned air space and the sun. In this post, our Bossier City roofers at Quality Exteriors explore radiant barrier roofs, their pros and cons, and why they are an excellent option for keeping you from sweating over a high electric bill. And they’re simply another useful tool for keeping some of that Southern heat out of your house. That shiny, metallic material lining some attics? That’s a radiant roof barrier. If you’re lucky, your air conditioner may finally catch a break in late autumn when it cools down outside.Ĭlosing shades and drapes during the day, using your oven less, and using a programmable thermostat are all strategies to keep your house cooler and your energy expenses cheaper. Often, it is a battle to keep the heat from rising inside our homes, as well. Some other common applications include vapor barrier/insulation installed behind interior drywall, crawl space insulation and flooring underlayment.We all know how hot it gets here in Louisiana during the summer. This is a very costly procedure so it is usually not used as a prescriptive measure to meet Title 24 energy efficiency requirements. It is manufactured using reinforced aluminum facings on both sides and is only 1/8” thick. This is not a common prescriptive measure to use when meeting Title 24 energy efficiency requirements.Īmong other applications, this Low-E product, ESP Micro-E® is most commonly used to insulate the underside of roof rafters.
Used alongside a properly balanced intake and exhaust system of air ventilation, this helps your roof become an effective tool to reduce air conditioning costs as well as keep your roof in good condition. It acts as an insulator, helping to minimize heat transfer coming into the attic space, as well as a moisture barrier. Radiant barrier that is installed directly to the roof deck before the actual roofing material is installed. However, the foam core will create a thermal block and significantly reduce summer heat gain and winter heat loss in the attic. It can also be used under asphalt singles, but the reflective qualities will not be utilized. Therma-Sheet provides excellent thermal and moisture protection under metal roofing, stone coated steel, concrete or clay tile. It is installed over top of traditional felt paper or other underlayments. The facings are heat laminated to a closed cell polyethylene foam core. Low-E Therma-Sheet insulation has 99% pure polished aluminum facings. Radiant barrier in the attic or on the roof deck. When re-roofing in the Sacramento area, there are 2 applications that can be used as a prescriptive measure to meet the Title 24 energy efficiency requirement. There are a lot of applications for radiant barrier on a building.
0 kommentar(er)
