Sealant for Joints

I have the same question... This is also in relation to IEQc3 and technology used to make the screed system.

I am not familiar with this type of system. What are the "wet" components and how are they applied?

Hi guys, I have a similar question. To seal floor concrete joints , we're thinking of using joint sealant Thioflex 600 which is a polysulfide sealant (form: paste compound). Is it necessary for us to know the VOC content of this product for complying LEED requirement? If it is where do this kind of product belong in the SCAQMD Rule #1168?

I've just reviewed the definitions for Rule 1168, and it seems pretty clear that this type of concrete joint sealant falls into the category of "Architectural Sealants," with a corresponding VOC limit of 250 grams/liter. You can see the full text of the rule from the link in the "Resources" section of this LEEDuser credit page. It includes this definition of Sealant: "SEALANT is any material with adhesive properties that is formulated primarily to fill, seal, or waterproof gaps or joints between two surfaces. Sealants include sealant primers and caulks."The definition for "Architectural Sealant" is a sealant that is applied to a stationary structure (or mobile home)."So yes, it is necessary to know the VOC content. The product literature I found online for Thioflex 600 doesn't list any VOC content, so you'll need to contact the supplier. Looking at literature for similar two-part polysulphide sealants suggests that they have zero-VOCs, so my guess is that you'll be in good shape on this one.