How to Install Crown Molding and Trim

Installing crown molding and trim can add a touch of elegance to any room. Follow these steps to install crown molding and trim like a pro.

Interior design of a living room. Deep blue velvet sofa against a marbled wall, framed art with dramatic geometric patterns, stone center table with metallic legs, mounted spotlight focused on the high ceiling rendering a sunlit effect, outing lamps trimmed in gold detailing.

Step 1: Gather Your Tools and Materials

Before you begin, make sure you have all the necessary tools and materials. You’ll need crown molding, a miter saw, a measuring tape, a level, a coping saw, finishing nails, a nail gun, wood filler, sandpaper, caulk, and paint. The DEWALT 12-Inch Saw is a reliable and precise tool for making accurate cuts.

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Step 2: Measure and Cut the Molding

Measure the length of the walls where you will install the molding. Use a miter saw to cut the molding at a 45-degree angle for inside and outside corners. Always measure twice and cut once to ensure accuracy.

Step 3: Prepare the Molding

If your walls are not perfectly square, you may need to cope the joints. Use a coping saw to cut along the profile of the molding to ensure a tight fit at the corners. Sand the edges for a smooth finish.

Step 4: Install the Molding

Start installing the molding at one corner of the room. Use a level to ensure it is straight, and secure it to the wall with finishing nails or a nail gun. Continue installing each piece, making sure the joints fit snugly together.

Step 5: Fill Gaps and Nail Holes

Once the molding is installed, fill any gaps or nail holes with wood filler. Let the filler dry, then sand it smooth. This will ensure a seamless finish.

Step 6: Caulk the Edges

Apply caulk along the edges of the molding where it meets the wall and ceiling. This will fill any small gaps and give the molding a polished look. The DAP Alex Plus Acrylic Latex Caulk is a great option for a smooth, paintable finish.

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Step 7: Paint the Molding

After the caulk has dried, paint the molding to match your decor. Use a high-quality paint and a brush for a smooth, even finish. Apply at least two coats for best results, allowing each coat to dry completely before applying the next.

Interior design of a living room. Expansive glass chandelier lighting over an abstract metal wall art, plush white sofas, a sleek marble fireplace, oak wood floors topped with a monochromatic hand-tufted rug, all encompassed by ivory painted walls reaching up to high, coffered ceilings elegantly trimmed with burnished copper.

Step 8: Touch Up and Clean Up

Once the paint is dry, inspect the molding for any imperfections and touch up as needed. Clean up your workspace and enjoy your beautifully installed crown molding and trim!

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