Under LEED 2009, exterior views "borrowed" by an interior space via interior glazing - basically viewing through an interior window to see an exterior window - used to be limited to (1) layer of interior glass separating the space from an exterior window.
From what I have read, the current LEEDv4 guidance appears silent on this issue.
By any chance has anyone had either success or rejection of "borrowed" views to claim compliance of interior rooms without direct connection to exterior windows? Any feedback from those that have undergone formal review relying on this strategy?
thx!
Sebastien Panouille
June 7, 2018 - 3:00 pm
If anything have any input on this that would be really appreciated. We just found that view on atrium scan only be use to a limit of 30% - but does an office space that has a window on an atrium and that I can see through the atrium glazing the outside from that same window count under the max 30% of atrium views spaces or is OK because there is only 1 layer of interior glazing between the user and the actual outdoor space
TODD REED
Energy Program SpecialistPA DMVA
LEEDuser Expert
889 thumbs up
June 8, 2018 - 8:34 am
Sebastien, so what you are asking is that an office has a window that looks into an atrium but also looks through the atrium glazing to the exterior. So is the atrium enclosed with a side adjacent to the exterior?
The limit on the number of interior layers of glass is two. So you have the exterior glazing and then two interiors. Any view whether into an atrium or exterior is not acceptable if through more than those layers. If a space has a view into an atrium and exterior and as long as that view to the exterior falls under two of the four options for views, then i would use the exterior view. I would only used the views into the atrium for spaces that have no exterior views.
Hopefully this answers your question.
Maria Porter
Sustainability specialistSkanska Sweden
271 thumbs up
August 13, 2021 - 4:28 am
Joanna, did you find out if you could have an interior window + an exterior window, the same as in v2009?
Afogreen Build
www.afogreenbuild.comGreen Building Consultant
247 thumbs up
September 13, 2021 - 7:31 am
Hi Maria,
LEED BD+C v4 Guide page 741 at Step-by-step guidance on Step 2 states to consider using transparent partitions or providing interior glazing at eye level to ensure views for enclosed spaces. Therefore, it is supposed to be accepted to have an interior window + an exterior window. Just please make sure, for each regularly occupied space, at least two of four eligible view types are applied.
Maria Porter
Sustainability specialistSkanska Sweden
271 thumbs up
September 13, 2021 - 7:35 am
Thank you, that seems resonable!