Search

What is Solar Reflective Index (SRI) and Why does it matters for roof Coatings?

Updated: Jul 23

Solar Reflective Index(SRI) becomes an important parameter while selecting a highly reflective roof coating which keeps roof cool, lowers the indoor temperature and reduce the cooling cost in a building


High SRI coatings, Solar thermo-reflective coating roof cooling coatings, Cooler roofs cooler indoor, Heat reflective roofs, High Albedo Paint


The SRI value is a calculation method as per ASTM E1980-11(2019) using Solar reflectance(or sometimes referred as TSR total solar reflectace) and thermal emittance values to determine the roof's overall capacity to refuse solar heat.


Solar reflectance is the amount of solar energy (across the solar spectra UV, VIS, IR) that is reflected away from the building, back to the atmosphere. The higher the solar reflectance is of a coating, the less heat the building have to absorb. Thermal emittance is the relative abilility of a roof to emit (release the heat back into atmosphere) heat that has been absorbed.

Therfore, the higher the SRI value is, the greater ability the coating has to reject solar heat absorption, maintaining a much cooler indoor ambient air temperature even without the need of air conditioning.

The SRI solar reflectance index is a scale of 1 to 100 that is a measure of a roof’s combined thermal properties. It is defined so that a standard black (reflectance 0.05, emittance 0.90) is 0 and a standard white (reflectance 0.80, emittance 0.90) is 100. But some hot roofs can have negative values, and most white thermo-reflective roofs, white thermoplastics and cool pavement coatings have scores higher than 100.


LuminX solar heat reflective roof cooling coating sri paint cool roof coating high SRI value summer cool roof coating heat reflective coating IR heat resistive coating
LuminX solar heat reflective roof cooling coating for roofs

In India Confederation of Indian Industry (CII) leading the way for sustainable practices. Confederation of Indian Industry (CII) formed the Indian Green Building Council (IGBC) in year 2001. Indian Green Building Council (IGBC) has licensed the LEED Green Building Standard from the USGBC. IGBC facilitates Indian green structures to become one of the green buildings.


According the results reported by CEPT University - Ahemdabad for our LuminX cool roof test samples. LuminX Solar reflective summer cool roof coating provides the highest reflectivity capabilities availble to the roof coating market. LuminX delivered highest long-term solar reflectance and SRI rating of all the roof coatings in the market. This roof coating is excellent choice for professionals for rejecting heat absorption, lowering energy cooling costs and creating a cooler, more comfortable environment inside the building.


Thermo reflective cool roof coatings in india cool roof coatings

high sri value paint

paint coating for cooler roof

roof cooling coating paint

reduce roof temperature coating

summer coolcoat water proofing

heat reflective paint coating heat resistance coating

Best roof coating for cooling homes

486 views0 comments
 
Cool roof paint | Cool roof coating | Heat resistant paint | Terrace cooling paint | Solar reflective roof coating | paint for Cool roof | Roof cooling paint | cool roof paint price Indiabest cool roof paint | luminx cool paint price | best cool roof paint India | luminx cool roof paint excel cool coat, excel coatings, thermacool, competitor names, SRI paint, High SRI paint, High SRI coatings