Over the past 10 years, I've seen an explosion of products listing VOC content, but also a total disappearance of any companies recognizing the "less water" requirement SOME of those at least reference the SCAQMD std but a greater number do not. BOTH of these have on the first page a list of amendment dates that culimnates with date how does one know what the most recent date is, and how would anyone verify if the documents have the same appearance?Ĥ. I have another copy of the file that I saved in July 2008 and it had another column for even lower allowable content dated Jan 2007, which the more recent file does not have. The above VOC limit numbers are from a SCAMD file that I saved in Feb 2012. It is very confusing to be reading something in 2012 that refers to "current" limit and then see that it is a higher content than that allowed in July 2005.ģ.
Can anyone please confirm my reading of the SCAQMD tables? No one I know can confirm that the standard, Amended Jan 2005, and listing (for example) an " 7/1/05 Effective Date" limit of 550 g/L and a "Current VOC Limit of 650" to mean that, as of Jan 2005, the (then-)current limit is 650 and, as of July 2005, will be decreased to 500. I finally have a project with membrane roofing on metal decking (no slab)and so must consider the installation products for the membrane roofing as not *outside"* the weather barrier, since these products make the weather barrier any additional info on this? Should one include seam sealers but not flashing adhesives? Why don't these show in the LEEDuser table above? What about similar adhesives and sealants associated with the installation of the building envelope weather barrier and/or vapor barrier? What category would you use for those products?Ģ. has listed, and attributed to SCAQMD 1168 effective 7/1/05, under "Sealants" two products that do not show in the LEEDuser table above Nonmembrane Roof and Single-Ply Membrane. Using adhesives and sealants that ultimately DEFINE the weather barrier. You may as well submit your query, and we will get back to you shortly. We are one of the building envelope companies you can trust.I've understood the LEED EQc4.1-4.3 requirements, including the reference standards, and have pursued LEED credits for these numerous times over the past 10 years, but have more recently have had projects with nuances that have tugged at the limits of my understanding with regard to the following points (any help much appreciated):ġ.
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