In a steel structure building, in which the steel is within the building weather proof, two applications are applied:
1- Fire Proof Paint (applied on site)
2- Solvent Based Top Coat Paint (applied on site) over the fire proof paint
Question 1: Since the fire proof paint is covered by the top coat, should it comply with SCAQMD VOC limits?
Question 2: Should the top coat for steel structure comply with GS-11 or SCAQMD Rule 1113 (VOC 600 for Solvent Based IM)?
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Jon CliffordLEED-AP BD+C
321 thumbs up
January 30, 2016 - 10:51 pm
Ali—LEED CS-2009 cites the version of SCAQMD-1113 that was in effect on January 1, 2004 (http://www.usgbc.org/sites/default/files/SCAQMD%20Rule%201113%207-9-04.pdf). Your post mentioned the category “Solvent Based IM,” which does not appear in the 2004 rule. This tells me that you are looking at a newer version of the rule that does not apply to CS-2009. But to address your questions:
. . Answer 1: All interior paints applied on-site must comply with the VOC limits required under IEQc4.2. If a coating system includes several coats and different coating types, all layers that are applied on-site must comply.
. . Answer 2: If the either product meets the Green Seal GS-11 definitions for flat or non-flat paints, use the GS-11 VOC limits (50 or 150g/L). Likewise, if either product has anti-rust properties, use the GC-03 VOC limit for Anti-Corrosive (250g/L).
Be aware that you can also use the VOC limits set by California Air Resources Board 2007, Suggested Control Measure for Architectural Coatings (CARB-SCM-2007) (See http://www.usgbc.org/leed-interpretations?keys=10295 & http://www.usgbc.org/sites/default/files/CARB%202007%20SCM%20-%20Final%2... ). The coating categories defined in this standard fit the paint types more closely:
. . 1. The fireproof paint is a “Fire-Resistive Coating” (350g/L) if its fire-resistance has been tested according to ASTM-E119.
. . 2. The topcoat would be a “Flat,” “Nonflat,” or “High-Gloss” (50, 100, or 150g/L) depending on its sheen. (It may not qualify as a “Rust-Preventative Coating” because the CARB definition requires such coatings to be applied direct-to-metal without a primer.)
If the coating category that you need is not available from the drop-down menu on the LEED-Online form, select the “Other” category. If you pick "Other," the “Product Type” & "VOC Allowable" fields will allow you to type in appropriate category & limit.