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NC-v4 SSc5:Heat island reduction

Glass skylights and existing roof

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Jonathan Hickerson
Architectural and Brand Strategist
EDA Architects
LEEDuser Basic Member
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I have an existing metal standing seam roof that is historic and will remain, and there is a new skylight going in. How do I calculate the heat island impact under LEED v4 New Construction with these two features? Also, do I need to have the existing roof examined to get the actual SRI from it? Thanks,

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Summer Minchew
Managing Partner
Ecoimpact Consulting
LEEDuser Expert
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Tue, 08/30/2016 - 19:32

Hi Jonathan. You will need to have the existing roof tested to get the actual SRI value unless you have existing building documentation confirming the manufacturer listed 3 year aged SRI value for the material. The skylight should be excluded per page 200 of the LEED v4 Reference Guide.

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