We are often disappointed by how muddy and stained our high SRI low-slope membrane roofs are when the building is turned over from the contractor. Our standard spec language does have some requirements for roof protection during construction, and for the roof to be free of damage and deterioration at substantial completion, but it is rather vague. Do you routinely specify anything specific about maintaining the SRI, or cleaning at the end of construction? And if so is there a relevant standard to reference? If we routinely specify cleaning, how do we determine if it got "clean enough" for the SRI to be maintained?

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Summer Minchew

Managing Partner

Ecoimpact Consulting

LEEDuser Expert

171 thumbs up

Wed, 07/06/2016 - 15:00

Carrie: The LEED Reference Guide for Building Design and Construction suggests the need to "consider high-reflectance materials' need for maintenance (e.g., regular cleaning) required to keep these materials from losing reflectivity over time" but does not provide a referenced standard or suggested maintenance schedule. However, the LEED Reference Guide for Building Operations and Maintenance suggests that during the Performance Period for SS Heat Island Reduction "implement a maintenance program that ensures all high-reflectance roof surfaces are cleaned at least every three years to maintain good reflectance." Hope this helps.

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