Prep & Protection

Caulk

"A flexible sealant applied to joints between siding, trim, windows, and doors to block water and air infiltration. Typical exterior caulks are siliconized acrylic or polyurethane."

American English entry — uses US spelling (color, gray, favorite, neighborhood) and US units (sq ft, gallons, ZIP code). Optimized for homeowners and painting contractors across the United States.

Color definition in detail

Use 100% acrylic or urethane caulk for paintable exterior joints; silicone-only caulk does not accept paint. Replace cracked or separated caulk before every repaint.

Synonyms & Related Color Terms

Sealant Exterior caulk

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