How to cut corner cornices

Written by cameron easey
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How to cut corner cornices
Cornces are used to cover the edges of ceiling panels (ceiling image by EvilGirl from Fotolia.com)

Cornices for ceilings, such as tin or wood, come in pre-cut and mitred pieces attached to the top of the walls to cover the edges of the ceiling panels. Cornices are typically decorative or ornate and can be used as an alternative to crown moulding. To cut a corner cornice, first measure the room's perimeter to determine how much material you'll need.

Skill level:
Moderate

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Things you need

  • Pencil
  • Nail gun
  • Mitre saw
  • Tape measure

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Instructions

  1. 1

    Arrange the cornice pieces on the floor to see how they will need to fit on the inside and outside corners of the walls.

  2. 2

    Hold a section of cornice up on the wall, where you want to start, and make a mark on the wall with the pencil.

  3. 3

    Place a level on the mark. Draw a line around the perimeter of the wall to use as a reference line for installing the cornice.

  4. 4

    Place the end of one piece of cornice onto the mitre saw. Adjust the mitre saw to a 45-degree angle and cut the end to create an inside corner.

  5. 5

    Set the first piece of cornice in place on the wall against an inside corner. Secure the cornice to the wall with the nail gun. Place a nail every six inches along the cornice.

  6. 6

    Install the next section of cornice and attach it with the nail gun. Repeat this step until you reach the opposite corner. Measure the last piece with the tape measure and cut a 45-degree corner into the opposite end.

  7. 7

    Cut a 45-degree corner into another piece of cornice. Insert the 45-degree end of the cornice into a corner so that the cut ends of the cornice meet. Secure the piece of cornice with the nail gun.

  8. 8

    Repeat steps 4 though 7 to cut and install the corner cornice pieces to complete the installation.

Tips and warnings

  • Seal the seams in the cornice with caulk to fill in gaps.
  • Adjust the angle of the blade on the mitre saw to cut a left-hand corner and a right-hand corner.

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