How far should a cornice come out from the wall?

How far should a cornice come out from the wall?

Cornice boards are usually mounted 4 inches above the top of the window frame or window treatment. The height of the cornice is generally 1/5 the total height measurement of the window or the current treatment.

How much does a window cornice cost?

Cost to Install a Cornice
Cornice CostsZip CodeLineal ft.
Cornice – Installation Cost$115.

What is a cornice made of?

Typically cornice and coving are made of plaster, paper-covered plaster, polyurethane, expanded polystyrene or timber. An architrave is a moulding that sits above a door, window or other opening, where the architrave extends across the top of the side mouldings to the opening.

How do you attach cornices?


  1. Mix USG Boral Cornice Adhesive in a small container. ...
  2. Using a 150mm broad knife, butter a 10mm bead of adhesive to the back edges of the cornice and to the mitre edges.
  3. Press the cornice firmly into position, squeezing excess adhesive out from under the cornice.

How do you make a wooden window cornice?


  1. Measure length of window and frame.
  2. Mark the board where you would like to cut it. ...
  3. Cut board into three pieces using a miter saw.
  4. Dry fit the pieces around the window and frame.
  5. Add 2 pocket holes on the inside of the 2 small pieces of wood.
  6. Lightly sand wood with 120 grit sandpaper and stain the pieces.