Masonry Joint Sealant

Masonry joint sealant would be an Architectural Sealant, VOC limit 250g/L. See SCAQMD 1168 for definitions of adhesive & sealant types. SCAQMD defines "Sealant" as "any material with adhesive properties that is formulated primarily to fill, seal, or waterproof gaps or joints between two surfaces," and "Architectural Sealant" as one "applied to stationary structures." Since masonry is typically part of a stationary structure, masonry joint sealant qualifies as an Architectural Sealant. Since IEQc4.1 addresses products used inside buildings, Architectural Sealant is typically the only sealant type relevant to IEQc4.1. SCAQMD's VOC limit chart (shown in the LEED Reference Guide) also lists "Roadway" sealant & two types of roofing sealants, but these are normally exterior applications outside the scope of IEQc4.1. Presumably, "Other" sealants would be those not intended for use on buildings--perhaps on automobiles, boats, or aircraft--also beyond IEQc4.1's scope. The SCAQMD list also includes a couple of adhesive types that are not ordinarily applied to buildings.