recaulk

Recaulk refers to applying a fresh layer of sealant to joints or gaps that have previously been caulked, with the aim of restoring a watertight and airtight seal and preventing moisture intrusion, drafts, and decay.

Common applications include bathrooms (around showers, tubs, and sinks), kitchens, exterior windows and doors, and gaps in siding or countertops. Sealants vary by area and are available in silicone, polyurethane, and acrylic latex.

Silicone is durable and flexible and resists water, making it common in wet locales; polyurethane is strong and paintable but harder to apply; acrylic latex is easy to use and clean but less durable in moisture.

Preparation is key: remove old caulk completely with a utility knife or caulk remover, clean and dry the joints, and treat any mold. Use painter’s tape to define edges and select the correct caulk for the area.

Application involves loading the tube into a caulking gun, applying a steady bead, and smoothing it with a caulk tool or finger dipped in water. Cure times vary by product: latex about 24 hours; silicone and polyurethane often 24–48 hours.

Maintenance involves inspecting caulk annually and redoing sections that crack, shrink, discolor, or fail to shed water. In exterior or high-use areas, plan for replacement every 5–10 years. Dispose of old caulk and follow local disposal guidelines.