Sketch out the area to determine the linear feet you’ll need for the project (Image 1). Keep in mind, you're creating a grid on the wall and capping off the channels. Our project required 13 pieces of 12' primed 1 1/2" thick lattice strips. Remove the existing TV, but leave the mounting bracket (Image 2).
Buy primed lattice strips to speed up the process.
Measure the width of the mantel (Image 1), and measure, mark and cut six lattice strips in that dimension. Secure the bottom piece along the mantel and the top piece against the crown using a nail gun with 18-gauge finish nails (Image 2). These two pieces will be your guide in determining where the remaining strips go.
Measure the distance between the bottom and top horizontal strip, then divide by the total number of horizontal boxes your design will have (Our project has three). This determines where the center of the channels, where the cables run, will be located (Image 1). The math is easiest if you create a 1/2" channel. Mark the wall using a level and pencil (Image 2). Secure remaining strips with the nail gun.
Measure the distance between the horizontal strips, and cut vertical strips to size. Install with a nail gun (Image 1). Repeat the process in step 3 to determine where the center of the vertical channel will be. Mark this on the wall using a level and pencil. Cut strips to size, and install with a nail gun (Image 2). Next, measure from the crown molding to the baseboard, and subtract 1 1/2" to leave room for the cables to exit the channel near the baseboards. Secure two vertical strips on either side of the mantel using a nail gun (Image 3).
At the bottom of the vertical strips near the baseboard, attach a small horizontal strip for a finished look.
Place the power cord and HDMI cables in the channels, taping down one section at a time (Image 1). Place a lattice strip on top, and secure with a nail gun, being careful to not drill through cables (Image 2). Repeat to conceal all cables and cords, and continue capping off the empty channels to finish the trim (Images 3 and 4).
Step 7- Paint it Out Use wood filler or painter’s putty to fill any nail holes, then caulk and paint the area in a crisp white to create the illusion of elaborate millwork. We also painted the mantle to freshen it up and ensure it had a cohesive look with the grid above.
Use wood filler or painter’s putty to fill any nail holes, then caulk and paint the area in a crisp white to create the illusion of elaborate millwork. For a cohesive look, paint the mantel in the same color.