Radiant Barrier

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Radiant Barrier

Radiant heat accounts for 93% of the heat gain in your home. Imperial Electric radiant barrier spray stops the majority of the sun's heat from ever entering the attic. Our radiant barrier application produces the lowest emissivity available in sprayed radiant barrier products. This means the barrier blocks at least 76% of the radiant heat trying to enter your attic. More information on Imperial Electric's radiant barrier products can be found

What is a radiant barrier?

Radiant barriers are materials that are installed in homes and buildings to reduce summer heat gain and winter heat loss, and hence to reduce building heating and cooling energy usage. The potential benefit of attic radiant barriers is primarily in reducing air-conditioning cooling loads in warm or hot climates. Imperial Electric Radiant barriers consist of a coating of a spray on barrier material.

How do radiant barriers work?

Radiant barriers work by reducing heat transfer by thermal radiation across the air space between the roof deck and the attic floor, where conventional insulation is usually placed. All materials give off, or emit, energy by thermal radiation as a result of their temperature.

On a sunny summer day, solar energy is absorbed by the roof, heating the roof sheathing and causing the underside of the sheathing and the roof framing to radiate heat downward toward the attic floor. When a radiant barrier is placed on the attic floor, much of the heat radiated from the hot roof is reflected back toward the roof. This makes the top surface of the insulation cooler than it would have been without a radiant barrier and thus reduces the amount of heat that moves through the insulation into the rooms below the ceiling.

Under the same conditions, a roof mounted radiant barrier works by reducing the amount of radiation incident on the insulation. Since the amount of radiation striking the top of the insulation is less than it would have been without a radiant barrier, the insulation surface temperature is lower and the heat flow through the insulation is reduced.

Radiant barriers can also reduce indoor heat losses through the ceiling in the winter. Radiant barriers reduce the amount of energy radiated from the top surface of the insulation, but can also reduce beneficial heat gains due to solar heating of the roof. The net benefits of radiant barriers for reducing winter heat losses are still being studied.

How does a radiant barrier differ from conventional attic insulation?

Radiant barriers perform a function that is similar to that of conventional insulation, in that they reduce the amount of heat that is transferred from the attic into the house. They differ in the way they reduce the heat flow. A radiant barrier reduces the amount of heat radiated across an air space that is adjacent to the radiant barrier. The primary function of conventional insulation is to trap still air within the insulation, and hence reduce heat transfer by air movement (convection). The insulation fibers or particles also partially block radiation heat transfer through the space occupied by the insulation.

Imperial Electric offers radiant barriers from manfacturers such as:

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As always, EVALUATION and an in depth CONSULTATION regarding current requirements including annual kilowatt usage costs and budget, the Imperial Electric team can recommend the best system to ensure your energy saving goals are met.

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Radiant Barrier Products

Imperial Electric uses quality radiant barrier products from the following manufacturers

  • RADIANCE™ e-0.25 Attic Barrier
    Radiance™ e-0.25 Attic Barrier is formulated to be sprayed on the underside of the roof deck. When applied it creates an effective radiant barrier that will stop up to 79% of the potential radiant energy transfer into the attic. (Read More-pdf)

  • HEATBLOC 75
    Heatbloc-75     radiant attic barrier is formulated to be sprayed on the underside of the roof deck, rafters, ridge and gable ends to creates an effective radiant barrier that will stop 75% of the potential radiant energy transfer into the attic. (Read More-pdf)