 Lowers your cooling bills up to 25%
You feel cooler, more comfortable
Ideal for hot climates
Lowe cost for long-term results
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| WHAT IS HeatBloc-75? |
| HeatBloc-75 is an aluminum colored, water-based, low emissivity (low-e) coating. When applied to building materials such as plywood, OSB or plasterboard, HeatBloc-75 lowers their surface emissivity to 0.25 or lower, thereby blocking 75% of the radiant heat trying to enter the home. It is classified by ASTM as an Interior Radiation Control Coating (IRCC) and may be effectively used as an interior radiant barrier. |
| HOW DOES HeatBloc-75 WORK? |
| HeatBloc-75 radiant barrier works by changing the emissivity of the surface where it is applied. Building products such as wood, brick, and plasterboard have high emissivities (0.7-0.95). When heated, they radiate most of their heat to cooler surfaces by allowing the heat to penetrate the roof into the attic and from the attic into the house. HeatBloc-75 lowers their surface emissivity to 0.25, lessening their ability to radiate heat and therefore letting less heat penetrate the roof into the attic. |
| WHAT IS A RADIANT BARRIER? |
| Heat penetrates buildings in three ways: conduction, convection and radiation. Radiation is the transfer of heat by electromagnetic waves known as thermal radiation. Thermal radiation is a form of invisible light that travels through the air from a warm to a cool surface. Warm surfaces, such as roof decks warmed by the sun, will radiate or emit their heat to cooler interior building surfaces. Radiant barriers address heat flows by radiation. A radiant barrier is a low-e surface placed in the path of thermal radiation that blocks heat transfer. |
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Photo of roof deck sprayed with HeatBloc-75
with a small square left exposed.
Infrared photo of same area showing the transfer of heat through the exposed area (red). Green indicates heat blocked by HeatBloc-75 application.
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