Heat Emissivity

If a coating retains heat, it will pass it to the substrate and into your house! Emissivity is the quality of the coating to emit energy by radiation.

Where a coating cannot reflect 100% of the solar radiation, what it does with the heat energy not reflected (absorbed) will affect the temperature inside your roof. That means that the greater the emissivity of the coating, the less heat is passed into your home.

Emissivity is one half of the Solar Reflectance Index (SRI) calculation.