At the point where pressure-treated wood meets a concrete foundation, there are often gaps to be filled. In an unfinished basement, these gaps will be plain as day. If you have a finished basement with a dropped ceiling, remove the ceiling tiles to access the sill plate and the foundation. Use GREAT STUFF™ Gaps & Cracks to seal the gaps (assuming they are less than 1 inch, use GREAT STUFF™ Big Gap Filler for gaps larger than 1 inch).

GREAT STUFF™ Gaps & Cracks seals gaps less than 1 inch

GREAT STUFF™ Gaps & Cracks and GREAT STUFF™ Big Gap Filler

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