Custom Fireplace Mantel

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Customize the look of your fireplace by building your own mantel.

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Figure A

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Figure B

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Figure C

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Figure D

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Figure E

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Figure F

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Figure G

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Figure H

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Figure I
Pre-assembled fireplace mantels are available at many home improvement centers. However, you can save money and add your own personal touches by building and installing your own mantel.

Materials:

drill, with drill bits and a Phillips driver bit
hammer
circular saw or table saw
miter saw
wood screws
finish nails
1"x12" boards
1"x6" boards
2"x4" boards cut into wedge-shaped blocks (90-degree triangles)
fluted wood molding
crown molding
base cap molding
joint molding

Steps:
  1. Install backing boards around the fireplace. You'll secure the mantel to these. Use a 1"x12" board (figure A) for the top backing board, and attach it with screws to the studs behind the wall. If no studs are available, use toggle bolts.

  2. Use wood glue to attach fluted molding to the center of the upright backing boards (figure B). Secure the molding with finish nails or brads.

  3. Attach another 1"x12" board directly above and flush with the outside edges of the fluted molding (figure C).

  4. Attach base molding to the bottom of the fluted molding (figure D), and attach base-cap molding to the top of the fluted molding (figure E). You can also add base-cap molding with mitered corners where the mantel meets the fireplace surround.

  5. Install joint molding 2-1/4" above the fluted molding to break up the flat surface between the fireplace surround and the top of the mantel.

  6. Cut a 1"x6" board to be used as a shelf, and nail it onto the 1"x12" backing boards (figure F). Level the shelf, using wedge-shaped blocks (figure G), which also provide a sturdy surface for nailing crown molding to.

  7. Cut and assemble crown molding to be placed beneath the shelf of the mantel. Attach it to the wedge-shaped blocks, backing board and shelf using finish nails (figure H).

  8. Attach the molding of your choice around the edge of mantel shelf (figure I ).

  9. Finish the mantel by filling nail holes with wood putty. Sand the wood putty smooth, then stain or prime and paint the mantel the color of your choice.