Hello,
Does anyone know if we can use paints or coatings with VOC content well above the LEED requirements, as long as the envelope walls are not yet constructed (i.e., the surfaces are considered exposed at the time of installation of paints, but these will be enclosed after a period of time)?
My reasoning would be "NO" because the paints will still emit VOCs for months after application, and this contradicts with the intent of the credit.
Just double checking if anyone had a previous experience with that, because one of the Contractors is "claiming" that he "previously heard that this is acceptable" - although I don't think this is true :)
Thanks!
Michael E. Edmonds-Bauer
Edmonds International38 thumbs up
June 28, 2013 - 4:55 pm
Interesting question.
LEED allows you to use any product without taking care of VOC content as long as the finishing has been applied to a material/component outside the project site. The perfect and simplest example of this is providing metal doors with paint already applied.
It is something similar to this, the material/component with the paint has already been "aerated".
Does anybody know anything about this situation?
John-David Hutchison, LEED AP BD+C, PMP
Sustainability ManagerBGIS
LEEDuser Expert
166 thumbs up
July 2, 2013 - 8:48 am
All materials under credit EQ 4 must comply if they used on the interior of the building (i.e., inside of the weatherproofing system and applied on-site), even if applied before the building is enclosed. I have not encountered any situation where this was not the case. I suspect the logic is three-fold;
1. this way there is no debate to when the building is truly inclosed,
2. applying material on the interior, even before full enclosure, may cause other materials within the building to be contaminated,
3. There are varying time periods for different materials to "off-gas" (to your term "aerate")
Offgassing is the evaporation of volatile chemicals in non-metallic materials at normal atmospheric pressure. This means that building materials can release chemicals into the air through evaporation. This evaporation can continue for years after the products are initially installed which means you continue to breathe these chemicals as you work, sleep and relax in your home or office.
Maya Karkour
EcoConsulting872 thumbs up
July 2, 2013 - 8:54 am
Thank you John, very helpful!
Michael E. Edmonds-Bauer
Edmonds International38 thumbs up
July 8, 2013 - 3:34 pm
I will assume then that either open or closed enclousure everything need to comply in order to not cause confusion to LEED reviewers.
It make sense after all.
Thank you very much John.