Forum discussion
NC-2009 SSc7.2: Heat Island Effect—Roof
Whe have problems to get SRI-values for parking deck coatings.
Sto says on their website that the Light Reflactance Value (LRV) can be used to calculat the SRI-value.
Has anyone documented the SRI-value based on the LRV and was that accepted by the reviewers?
From http://www.stocorp.com
"Sto's Color charts list the % Light Reflectance Value (LRV) of each color. This value (divided by 100) may be used to calculate the SRI for a given color."
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We don't know the SRI value of some roofing materials we are using. What should we do?
Do balconies and terraces need to be counted towards the roof square footage?
How does one calculate the square footage of a pitched roof?
Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11478 thumbs up
April 28, 2014 - 11:00 pm
My understanding is that LRV is used for measuring visible light (and is relevant for interior design), and SRI is used for measuring solar heat, including non-visible wavelengths. Converting one to another simply by division is not possible. I would ask Sto Corp to verify how they convert one to another.