Caulk and Sealant Replacement (Silicone vs Polyurethane, Mold, VOC) — household safety profile
Low riskOld caulk harbors mold that penetrates below the surface — must be removed, not cleaned over.
What is this product?
Old caulk harbors mold that penetrates below the surface — must be removed, not cleaned over. Silicone caulk: acetic acid off-gassing during cure. Polyurethane: contains MDI (skin sensitizer, gloves required). Latex/acrylic: lowest VOC, shortest lifespan. All caulks off-gas during cure: 24-72 hours for silicone, 7-14 days for polyurethane.
What's in it
Click any compound name for its full safety profile, regulatory consensus, and exposure data.
Contaminant
Solvent
Frequently asked questions
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