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Step 7 · Fill Nail Holes and Caulk Gaps

Once the adhesive has fully cured and any fasteners are in place, address any imperfections. Use a quality wood filler to fill all nail holes, pressing it in firmly with a putty knife. Allow the filler to dry completely, then sand it smooth. Apply a thin bead of paintable caulk along any seams where the molding meets the stair nosing or adjacent trim to hide small gaps and create a smooth, finished appearance.

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Step 7 · Fill Nail Holes and Caulk Gaps

Once the adhesive has fully cured and any fasteners are in place, address any imperfections. Use a quality wood filler to fill all nail holes, pressing it in firmly with a putty knife. Allow the filler to dry completely, then sand it smooth. Apply a thin bead of paintable caulk along any seams where the molding meets the stair nosing or adjacent trim to hide small gaps and create a smooth, finished appearance.

Videos for this step

Caulk and Fill Nail HolesFill, Caulk, and SandFill Nail Holes

Tools and Materials

← Project

How to Install Cove Molding Under Stair Nosings

Step 7 of 8·45 min left

Measure and Mark Molding for Cuts
15 minutes3 items
Cut Cove Molding
20 minutes4 items
Dry Fit the Molding
10 minutes1 items
Apply Adhesive
5 minutes2 items
Install Molding with Adhesive
10 minutes3 items
Secure Molding with Fasteners (Optional)
15 minutes4 items
7
Fill Nail Holes and Caulk Gaps
15 minutes6 items
8
Clean and Paint/Stain
30 minutes4 items
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