Home & Garden Maintenance & Repairs

How to Caulk a Kitchen

    • 1). Run a 2-inch-wide putty knife along the seam where the backsplash meets the countertop to remove the old caulk from the seam.

    • 2). Spray the ammonia and water solution around the kitchen sink and around the area where the backsplash meets the countertop. Wipe the sprayed areas with clean rags to remove old caulk and contaminants from the surfaces that are to be caulked. Ensure that all surfaces are thoroughly dry before you continue.

    • 3). Insert a tube of silicone caulk into the drop-in caulk gun.

    • 4). Cut the end of the caulk tube nozzle at a 45-degree angle with an opening approximately 1/16-inch wide, and slide the 8-inch long piece of thin wire down the opening to puncture the inner seal of the caulk tube.

    • 5). Run a thin bead of caulk on the seam where the backsplash meets the countertop. Make sure there are no breaks in the bead of silicone caulk, as this will cause thin spots in the final smoothed bead.

    • 6). Dip one finger into the bowl of water, and run your wet finger along the bead of caulk to work the caulk into the seam. Clean the excess silicone from your finger with a clean rag, and wet your finger often to keep the bead of silicone clean and smooth. Allow the bead of caulk to dry before you move on to the kitchen sink.

    • 7). Run the 2-inch-wide putty knife around the area where the edge of the stainless steel sink meets the countertop to remove any loose caulk or debris. Wipe this area with a clean rag to remove loose debris from the countertop.

    • 8). Run another thin bead around the entire edge of the stainless steel sink. Wet your finger and smooth out the bead of caulk to work the silicone under the sink flange (sheet metal that extends from the sink basin and supports the sink after installation).

    • 9). Spray the cleaning solution over the silicone caulk after it has "cured" for at least 24 hours, and wipe the area with a clean rag to remove any residue left on the silicone caulk.

    • 10

      Inspect the silicone caulk regularly to ensure that you have adequate protection from water intrusion.

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