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For the insulation product category, should we demonstrate compliance based on cost or surface area?

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NC-v4.1 EQc2:Low-Emitting Materials

low-emitting insulation v4.1

Since v4.1 has reorganized product categories, is there a change in the "boundary" we have to look at?  "everything within the waterproofing membrane" is still a thing in v4.1 or not? I.e. insulation is now a category by itself, does it mean we have to consider all insulation, exterior applied included or do we stick to the waterprofing membrane limit? Thank you!

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Douglas Flandro
Sustainability Design Leader, Exhibit Designer, Associate
CambridgeSeven
LEEDuser Premium Member
9 thumbs up

Wed, 03/10/2021 - 21:31

The credit language requirements still start with this statement, "Use materials on the building interior (everything within the waterproofing membrane) that meet the low-emitting criteria below." Then insulation is one of the categories below. The intent of the credit is to prefer proven low-emitting materials inside the weather barrier. Exterior insulation would likely be excluded, depending on the location of the air barrier in your building envelope assembly.

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