I am working on a project that has roughly 50% of the roof surface covered in white colored (not white coated) stone ballast and 50% white PVC. I am having difficulty finding manufacturing information on the SRI of the white stone ballast. An article published by DOW and Oak Ridge National Laboratory (ORNL) proved the benefits of the stone ballast acting as a heat sink (LINK: . http://msdssearch.dow.com/PublishedLiteratureDOWCOM/dh_0197/0901b8038019795b.pdf?filepath=styrofoam/pdfs/noreg/179-05079.pdf&fromPage=GetDoc). Has anybody had any experience in getting a stone ballast to qualify for the Heat Island Effect Credit? Thanks.

Post a reply

Susan Walter

HDR

LEEDuser Expert

894 thumbs up

Tue, 04/02/2013 - 14:16

Generally, ballast won't make the SRI values because of the shading and shadows that result in a pile of rocks. So while each white stone may individually apply, the whole installation would likely fall short. That said, there is a white masonry manufacturer in Quebec that may have SRI information and NREL may have something for you as well.

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.

You are currently logged in under an enterprise account

FAQs about SSc7.2 :

SRI of White Stone Ballast

You rely on LEEDuser. Can we rely on you?

Add new comment