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We’re working on an international project and having a hard time finding a coating with a published value for Solar Reflectance Index. If the coating is white, can we assume that it qualifies?

Are solar panels always excluded from the roof area for the purposes of the credit calculations?

Why does the form calculate my high-albedo roof area, as a value greater than 100% of total roof area?

What needs to be included in the roof maintenance program?

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EBOM-2009 SSc7.2:Heat Island Reduction—Roof

Annual Maintenance Cost of White Roof

This isn't specifically a LEED EBOM Credit question-but very pertinent as we discuss the improved performance of an exisiting building. We’re working on a project study for life-cycle costing of an HVAC and building envelope system that includes a white roof. Does anyone have information or resources for the annual maintenance cost of cleaning a white roof to keep it white? Internet searches on roof cleaning yield only residential-type services. I do understand most white roofs will require the cleaning every 2 years. Thank you for any insight.

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Ben Stanley
Senior Sustainability Manager
WSP - Built Ecology
LEEDuser Expert
188 thumbs up

Tue, 06/10/2014 - 14:36

Hi Rebekah, Have you checked with a few manufacturers if they have data related to annual maintenance? I would think that the maintenance for cleaning would entail a half to full days labor for 1 to 2 people depending on the size of the roof.

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