Existing Building Envelope does NOT Meet ASHRAE 90.1-2007

James Keohane

Sustainability and Commissioning Consultant

Sustainable Engineering Concepts, LLC

LEEDuser Basic Member

86 thumbs up

Project location :

United States

January 26, 2016

How do you meet and demonstrate requirements of EApr2 if elements of the existing building envelope does NOT meet 90.1-2007 Prescriptive measures? One thought: Can you use Building Performance Rating( appendix G) to demonstrate overall performance and sidestep existing building envelope weaknesses?

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Tue, 01/26/2016 - 23:02

You are only required to meet the mandatory and prescriptive measures associated with your scope of work. So if you are not replacing the windows or adding to the walls you do not have to meet those requirements.