How to Build a Fireplace Mantel

Video Transcript

How to Build a Wood Fireplace Mantle and Surround with Classic Design and Details.

Enhance your existing fireplace surround, removing flat trim and adding a three-dimensional wooden mantel and pilasters/columns to make it the centerpiece. Build components from stock lumber and molding using a table saw and circular saw. Attach them with a nail gun and construction adhesive. Spackle the nail holes, sand, and then paint to match the rest of your home's decore.

Remove Flat Trim with a Pry Bar and Putty Knife
Step 1

Remove Flat Trim with a Pry Bar and Putty Knife

Pry off existing trim with a small pry bar and wide putty knife. Position the putty knife between the wall and the pry bar and lever against it to avoid gouging the plaster or drywall behind it.

Cut Vertical and Horizontal Surround Components from Standard Dimension Pine
Step 2

Cut Vertical and Horizontal Surround Components from Standard Dimension Pine

Use a circular saw and table saw to cut standard dimension pine lumber to lengths and widths required for the horizontal portion and sides (pilasters or columns) of the fireplace surround. Cut the mantel and molding as well.

Assemble and Position the Pieces That Form the Wooden Surround
Step 3

Assemble and Position the Pieces That Form the Wooden Surround

Use glue and a pneumatic nail gun to assemble the vertical and horizontal components of the wooden surround. Locate wall studs and mark positions with a bar level to ensure they're plumb and horizontal. Nail up the horizontal member first.

Glue the Edges of the Surround's Sides That Touch Tile
Step 4

Glue the Edges of the Surround's Sides That Touch Tile

Apply construction adhesive to the inner edges of the two surround sides (pilasters) that rest on top of tile. Ensure the sides are plumb and resting squarely on the floor and then attach with a nail gun.

Combine a Pine One-by-ten and Decorative Molding for the Mantel
Step 5

Combine a Pine One-by-ten and Decorative Molding for the Mantel

Miter the corners of decorative molding and glue and nail them to a pine one-by-ten for the mantel. Set the molding in from the edge of the board to create an additional level in the decorative wood profile.

Position and Secure the Mantel with Construction Adhesive and Nails
Step 6

Position and Secure the Mantel with Construction Adhesive and Nails

Apply dollops of construction adhesive to the upper surfaces of the horizontal and side components of the surround. Position the mantel on top, level it, and secure it with the nail gun.