Attic Radiant Heat Barrier Paint
for energy conservation and heat & light reflection
LO/MIT attic heat barrier is a coating specially formulated to reduce summer radiant heat gain from the roof into the attic. LO/MIT is a silver-colored, non-thickness dependent, low emissivity radiant barrier paint (Interior Radiation Control Coating System- IRCCS), which may be used in almost any application where infrared (heat) reflectivity or diffuse light reflectivity is required. Cool your attic and lower utility costs by applying LO/MIT to the underside of your roof deck and rafters! Easily applied with standard airless paint sprayers, LO/MIT is the most economical way to install radiant heat barrier technology in your home.Buy on Find an Installer/Distributer
- Cools attics, saves up to 15% or more on A/C bills*
- Increase comfort in attic and home, raise resale value
- Low cost, easy to install and retrofit to existing and older homes
- DIY or contractor installed, One operator can easily apply 1000 ft.²/hr
- Lowest emissivity in the industry (reflects the most heat)
LO/MIT-II MAX e=0.147, LO/MIT-II e=0.170, LO/MIT-I e=0.210
- Independently tested
- Full 5.0 gallon pail covers approx. 2,000 square feet**
- Excellent Shelf Life: Re-usable After Opening up to 1 Year from DOM
- One coat application, easily spray or roller applied
- One component system, no primer needed, cleanup with soap & water
- Water-based, low VOC formulation
- Safely applied in enclosed spaces
- Class A Fire Rated, RIMA-I Certified for Energy Efficiency
- Conforms to ASTM Standard #C1321 for Interior Radiation Control Coating Systems (IRCCS)
- Moisture permeable, mold resistant, electrically non-conductive
- Unaffected by rodents, birds and insects
- Will not damage roof shingles or void shingle warranty
- No maintenance or re-coat needed when applied under roof
- Increases lighting levels in the attic
- Can be used as an exterior paint on flat roofs, mobile homes and trailers (LO/MIT-I only)
- Developed and manufactured in U.S.A.
*Actual savings will vary based on geographic location and individual building characteristics.
**Substrate/application method dependent
Disclaimer: this video uses an out-of-date Energy Star logo in reference to rooftop applications. Please visit Energy Star to learn more about the program or click here to see LO/MIT-I’s Energy Star rooftop certification.
Invented in 1978 by SOLEC for use in solar applications, LO/MIT went commercial by 1986 after research at the Florida Solar Energy Center (FSEC) showed its potential benefits for cooling buildings in warmer climates. Because of its low thermal emissivity and high reflectivity characteristics, LO/MIT is an ideal low-cost technology to reduce unwanted summer radiant heat gain in homes and buildings. Just like low-e windows, LO/MIT’s low-e characteristics reflect radiant heat.
When I bought some Lo/Mitt Max last winter I called your help line to ask some questions about sprayer settings. I told the helpful rep that I was using the product to spray the inside of a metal carport that I use for a run in shed for my cattle to get out of the summertime Texas heat. He ask me to let them know how it turns out. Well, I applied the radiant barrier in February to give it a good cure time before I let the cattle in. It’s now July and hot as blazes here. The steers really seem to like the now comfortable shelter all day long. Last year before I used your product when it was 98 degrees out, it was about 105+ degrees in the metal shelter. This year, I measured the outside temp at 97 degrees in the sun and inside the shelter it was 95! I put up a fan to move the air around and it is so much more comfortable in there it is amazing. Your product is awesome and the boys thank you.
This made a big difference in the temp of our attic, living in Florida, as well as keeping the house cooler and air conditioner not coming on as much as before we applied this to the ceiling in our attic. Well worth the effort and cost.
Emissivity (e) is a term used to describe the amount of heat objects release in the form of electromagnetic heat radiation. It is scaled from 0 to 1, and the closer the emissivity value is to 0 the less able the surface is to emit heat in that direction. Most residential roofing substrates like plywood and OSB have very high emissivities (e=0.850-0.930), allowing a vast majority of their heat to radiate to the cooler surfaces below, causing discomfort in the home and extending air conditioning run times. LO/MIT dramatically reduces the surface emissivity of the roofing substrate (LO/MIT-I e=0.210, LO/MIT-II e=0.170, LO/MIT-II MAX e=0.147), drastically lowering the roof’s ability to radiate its heat inward, lowering attic temperatures by 10-25+ degrees F, all with negligible effects on exterior roofing materials. Because attic temperatures are now cooler, standard R-value insulations, air conditioning handling equipment and ductwork located in the attic will operate more efficiently.
LO/MIT-I is recommended for all exterior and roof top applications or projects that require extremely fast drying times.
LO/MIT-II and LO/MIT-II MAX are recommended for all interior applications.
Applications that may involve some future abrasion, such as sidewalls or metal garage doors are excellent applications for LO/MIT-I or LO/MIT-II.
The vast majority of the radiant heat gain in the home comes through the roof, however many structures can also benefit from having LO/MIT installed on sidewalls and garage doors. LO/MIT can also provide comfort to outboard structures like sheds, garages, barns and other storage buildings. In some cases where the undersurface is inaccessible, LO/MIT can be used as a rooftop coating. Please contact the factory for help with your project.