How do I Install a Soapstone Fireplace Mantle?

Soapstone has been used for centuries for fireplace inserts and surrounds, as well as kitchen countertops, washbasins and other places where contact with a heat source is expected. The soapstone stores any heat that it comes into contact with and releases it back into the air evenly over several hours, providing an excellent source of radiant heat. A complete fireplace unit made from soapstone is quite heavy and should not be placed in a home with a basement without contacting a professional installer to ensure that the floor can handle the weight and that there is a proper cement foundation for the fireplace. However, a simple facade mantle and surround of soapstone can produce the radiant heat effect without the bother and expense of hiring a professional.

Pry bar
Sandpaper
Measuring tape
Table saw with diamond blade
Soapstone surround pieces
Level
Pencil
Utility knife
Construction adhesive
Caulking gun

Instructions

- 1
  Remove the old mantle, if there is one. Slide a small pry bar behind the mantle. Use the blade of a utility knife, placed between the wall and pry bar, to protect the wall from gouges.
- 2
  Sand the wall behind the mantle, if needed, to make it smooth.
- 3
  Check with your local building authorities to make certain you have the correct amount of clearance between the bottom of the firebox and the mantle. A good rule of thumb is 1 foot of clearance for each inch of overhang.
- 4
  Dry-fit the new surround, beginning with the legs. Make certain the legs are plumb--straight up and down--and level. Set the mantle on top of the legs and check for level. Using a pencil, mark the position of all three pieces on the wall. If necessary, cut the pieces to fit using a table saw with a diamond blade and sand down any cuts.
- 5
  Cut grooves in the wall where the legs will be placed using a utility knife. These grooves will help create a tight bond with the adhesive. Run a bead of adhesive on the back of the legs and press them into place. Check for plumb and level. Allow the adhesive to dry for 24 hours before continuing.
- 6
  Score the wall where the mantle will be set. Place adhesive on the tops of the legs and the back of the mantle. Lift the mantle into place on top of the legs and press it into place. Check for level.
- 7
  Apply mineral oil to enhance the stone's color and veining. Let the oil sit for 30 minutes before removing any excess. Repeat once a week for six weeks, then once a month for the next year.

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