The ideal "cool" roof is one whose surface is minimally heated by the sun, such as a bright white roof. However, sometimes the term "cool" is applied to a roofing product whose surface is warmer than that of a bright white material, but still cooler than that of a comparable standard product. For example, the afternoon surface temperature of a specially designed "cool" red roof is higher than that of a bright white roof, but lower than that of a standard red roof. An example of a "hot" roof is one with a standard black surface, which grows very warm in the sun.
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What is a cool roof tiles?
How do Cool tiles reduce heat?
There are actually 2 things to consider when it comes to heat proofing your terrace:
- Solar Reflectance
- Thermal Emittance
In simpler terms, solar reflection is how much heat is bounced back from the surface. It denotes how less is absorbed by the surface.
Thermal emission suggests that for the heat that is absorbed, how much is pushed back into the atmosphere.
Makes sense?
So, Higher the Solar reflection and Thermal Emission, Cooler the surface is.
Cool tiles generally have high solar reflectance and thermal emittance.
The Solar Reflective Index (SFI), that is the parameter used to identify the degree of heat reflectance, Cool Roof Tiles usually have 95%. This means that cool tiles can lower heat for about 10-15 degree celsius on any conditions.
Is Weathering tiles the same?
Weathering tiles are just another name given to tiles that are laid on your terrace(or under your roof) to provide insulation.
Cool tiles can also be known as weatherproof tiles due to its ability to not be affected by any weather.
Weathering or weather tiles can also be used to refer to roof tiles.
Several companies market their products under different value propositions. Some focus more on the weatherproofing aspect. Hence the term weathering tiles.
Weather tiles can also be found in terracotta colour. They may not always be ceramic cool tiles. It can be a cost-effective choice. But terracotta weathering tiles may not be able to reflect as much heat as ceramic cool tiles.
Benefits of Cool Roof Tiles
Like you imagined, there are pretty useful features. It can reduce heat. Tremendously! It reduces Global Warming. Fans and Coolers to keep you cool will take up less electricity. So, more money in your pocket. Your terrace will look better. If you want to have a party on your terrace, it is now possible.
