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What is Solar Reflectance Index

January 3, 2025

EverestOfficial

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What is Solar Reflectance Index?

The Solar Reflectance Index (SRI) is a measure of a material’s ability to reflect solar heat. Basically, SRI is used to assess how “cool” is a material. It is calculated based on the material’s reflectivity and its ability to emit thermal radiation. SRI is vital in construction and roofing, as it directly affects surface temperatures, indoor comfort, and energy efficiency, particularly in hot climates. Higher SRI value is a good indicator of solar heat reflection. 

What Does Solar Reflectance Index Value Mean?

The Solar Reflectance Index (SRI) is a scale that measures how well a material reflects sunlight and reduces heat transfer. SRI values provide a technical understanding of how a material responds to solar heat. The SRI scale ranges from 0 to 100, with 0 representing a black material and 100 representing a white material. However, some materials may have negative SRI values, and many white thermo-reflective roofs have SRI values higher than 100. 

Low SRI Values (0-30): These surfaces absorb significant heat, leading to higher surface temperatures. 

Moderate SRI Values (30-70): These materials reflect some heat but may still transfer heat to the interior. 

High SRI Values (70+): These materials reflect most solar heat and release absorbed heat efficiently, maintaining cooler surface temperatures.  

Everest Evercool Roofing Sheets

Evercool Roofing Sheets from Everest Industries are an excellent roofing solution material with a high 89% SRI value. They have a unique coating that helps keep buildings cooler by reflecting solar radiation. 

The innovative coating ensures:  

– Up to 18°C lower surface temperatures. 

 – Up to 7°C cooler indoor environments. 

 – Enhanced durability and long-term performance.  

Applications of Everest Evercool Roofing Sheets [ Beat the Heat with Evercool Roofing Sheets]

Everest Evercool Roofing Sheets are a versatile solution for combating heat in residential, agricultural and industrial spaces. With an exceptional SRI value of 89, these sheets reflect solar radiation effectively, reducing heat absorption. 

1. Residential 

In residential spaces, they are ideal for houses, terraces, and cold storage rooms, helping maintain cooler and more comfortable indoor temperatures. 

2. Agricultural

In the agricultural sector, these sheets are widely used in poultry and cattle sheds, where they prevent heat stress and enhance animal welfare, ensuring higher productivity. They are also beneficial for onion farms, where maintaining optimal temperatures may aid the produce. 

3. Industrial

In industrial and retail settings, Everest Evercool Roofing Sheets are an excellent choice for manufacturing units, warehouses, and storage facilities. Their ability to reflect solar heat makes them suitable for workshops and factories, reducing overall heat stress and improving working conditions of human resources. 

Benefits of Using High SRI Roofing Materials

  • Reduced Energy Costs: High SRI materials significantly lower indoor temperatures, reducing the dependency on cooling systems like fans or air conditioners, leading to significant energy savings. 
  • Improved Indoor Comfort: By minimizing heat transfer, high SRI roofing ensures a cooler and more comfortable indoor environment. This ensures a more pleasant living or working environment, even during extreme heat.  
  • Better Animal Welfare:  In agricultural settings, high SRI materials are crucial for maintaining cooler environments in animal shelters. Reduced heat stress leads to healthier and more productive animals. For instance, dairy cows produce more milk, poultry grows faster and breeding rates improve, directly benefiting farmers.  
  • Improved Roof Life: Roofing materials with high SRI values experience less thermal stress from extreme temperature fluctuations. This may reduce wear and tear, retaining the roof’s lifespan and lowering maintenance and replacement costs over time. 
  • Cooler roofs for cooler cities:  Cities often experience higher temperatures due to dense construction and heat-absorbing materials. High SRI roofing mitigates this effect by reflecting more solar radiation, contributing to cooler surroundings, and mitigating the urban heat island effect. 

In conclusion

High SRI roofing materials, such as Everest Evercool Roofing Sheets, offer unmatched benefits in energy efficiency, durability and comfort. Whether for residential, agricultural or industrial use, these roofing sheets provide an effective solution for managing heat and improving overall sustainability. Choose Everest Evercool for a cooler and more comfortable roofing solution.  

[For more information, visit https://www.everestind.com/roofing/evercool] 

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