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NC-v4 EQc1:Enhanced indoor air quality strategies

Exterior walk-off mats permitted?

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Vince Briones
Sustainable Design Manager
LEEDuser Basic Member
15 thumbs up

Hi- has anyone gotten verification on whether exterior walk off mats are permitted under v4? The reference guide and current addenda are silent on that detail. Prior to 2009/v3 they were allowed, then v3 emphasized use of interior mats, although case by case exceptions could be made if sufficiently justified that interior mats weren't feasible. We have a small project in schematic design where interior mats may be difficult, but not impossible, to accommodate. It'd be great to know if using an exterior mat will pose a risk to credit compliance!

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Ashwini Arun
Senior Sustainability Manager
WSP
LEEDuser Expert
53 thumbs up

Wed, 04/22/2015 - 20:31

Vince, I would imagine exterior mats should be allowed in LEEDv4 projects. As per LEED Interpretation #10098, ""The intent for the entryway system (grilles, grates, walk-off mats) is to capture dirt and dust. An exception to the 10 foot length and/or indoor location is acceptable provided your alternative solution meets this intent and is thoroughly justified." I don't see why this interpretation won't be applicable to LEEDv4 projects as well. So as long as the intent is met, you should be good with exterior mats. Rollout mats or other similar products should be acceptable, as long as they are weather protected and cleaned on a weekly basis.
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Maria Porter
Sustainability specialist
Skanska Sweden
LEEDuser Basic Member
205 thumbs up

Thu, 02/06/2020 - 13:36

Vince, did you submit your Project for review? Was it still ok with the exterior system provided it is under a roof? /Maria

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