How to trim a mirror

Written by denise brown
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How to trim a mirror
Add wood trim to a mirror to change its appearance. (mirror image by Lars Christensen from

Unframed mirrors are functional wherever you install them. If you want something out of the ordinary, add decorative moulding to the mirror edge. While this may sound difficult, adding trim to a wall mirror is no more difficult than building a picture frame. Find decorative mirror moulding at a lumber yard or use any decorative wood moulding. Also look for supplies at any store that sells picture frame trim, such as a craft store. Some stores may even offer to cut the mitred corners for you.

Skill level:

Things you need

  • Measuring tape
  • Wood trim
  • Table saw
  • Mitre saw
  • Wood glue
  • Staples
  • Wood clamps
  • Paint
  • Stain
  • Paintbrush
  • Glass sample same thickness as mirror
  • Epoxy with resin
  • Picture hangers

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  1. 1

    Measure your mirror. Also measure how thick the glass is.

  2. 2

    Purchase wood trim with a rebate cut along the back side. The rebate cut must be slightly deeper than the mirror's thickness. If you can't find mirror trim with a rebate cut, you can make the cut on the back of the moulding with a table saw. Be sure to purchase enough wood to have a bit left over to use as a test sample.

  3. 3

    Cut the wood trim for the mirror to the correct dimensions. Mitre-cut the corners with a mitre saw. Hold the trim together with your hands as you test fit the mirror in the frame. Make adjustments in the size of the trim if necessary.

  4. 4

    Join the corners together with wood glue and staples along the back of the frame. Clamp the corners tightly together and allow them to dry.

  5. 5

    Finish the mirror frame with either paint or stain. Paint or stain all of the wood or you may end up with an unwanted stripe around the edge as it reflects the untreated rebate cut. Allow the paint or stain to dry for at least 48 hours so it doesn't interact with the glue used in the next step.

  6. 6

    Mix a few drops of epoxy with its resin. Apply it to a sample piece of wood and a scrap piece of glass. Allow it to dry. By making a practice piece, you get a feel for how much epoxy you need to secure the mirror to the trim. If your sample doesn't hold the glass securely, use more epoxy or try a different brand.

  7. 7

    Combine enough epoxy and resin to glue the mirror to the frame. Once the epoxy is in place, set the mirror into position. If the mirror is large, ask someone to help you. Wipe up any epoxy that shows along the mirror edge or wood trim. Allow the epoxy to dry.

  8. 8

    Attach hangers large enough to support the weight of the mirror and frame, and secure the mirror to the wall.

Tips and warnings

  • You can use old decorative wood trim from doors or windows for your mirror moulding.
  • Avoid getting the epoxy glue on your hands. Allow plenty of ventilation as you use it.

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