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Window casing is the functional (and decorative) molding used to frame your windows. In the past, window casing hid the inner workings of the window’s sash weights, but today’s trim is mostly used for decoration as well as to hide any gaps or imperfections.
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Oct 24, 2023 · As we’ve discussed, window casing is the trim or molding that surrounds the window frame. It is both decorative and functional, providing structural support, weatherproofing, and enhancing the aesthetics of the window. Picture Source – EcoTech Windows & Doors. Can You Replace the Window Without Replacing the Casing?
- Step 1 – Trim Away Any Excess Insulation and Drywall.
- Step 2 – Cut and Install The Window Sill (Stool).
- Step 3 – Cut and Install The Top Jamb.
- Step 4 – Cut and Install The Side jambs.
- Step 5 – Cut and Install The Side Casings.
- Step 6 – Build and Attach The Top Decorative Header Casing.
- Step 7 – Cut and Attach The Apron.
If you’re starting with newly installed windows like I am, the first thing you’ll want to do is make sure that the drywall is cut flush with the framing around the window, and also make sure that there’s no excess insulation that will get in the way. If you have excess insulation like I did, or if you need to trim away any drywall that didn’t get c...
The first piece that will be installed is the window sill (technically called the stool). To determine the size of lumber you’ll need for this, measure the distance from the window frame to the front edge of the drywall… The measurement for my window was 2.5 inches. To that measurement, add 1.5 inches, which gave me a width of 4 inches for my windo...
Next, I measured, cut and installed the top jamb. Unlike the sill, the edges of the top and side jambs need to be flush with the face of the drywall. This piece also needed to be shimmed to get it level, and then I nailed it into place.
Next, I installed the two side jambs. These need to be ripped to the same width as the top jamb so that the edges are flush with the face of the drywall. In a stroke of luck, mine were 2.5 inches wide, which happens to be the exact width of a 1″ x 3″. Using a bubble level, I made sure the side jambs were plumb before nailing them into place. Both o...
With all the jambs installed and square/level/plumb, the two side casings can be installed. For this, I use 1″ x 4″ lumber. For this piece, I measured from the window sill to the bottom of the top jamb, and then added 1/4 inch to that measurement for the length of the side casings. Always measure each side separately, and don’t just assume that the...
To create the top header piece of the casing, I measure from the outside of the left side casing to the outside of the right side casing. Then I take that measurement and cut a piece of 1″ x 6″ lumber to that exact length. Next, I add one inchto that measurement, and cut two pieces of 1″ x 2″ lumber to that longer length. These three pieces create ...
And finally, I use a piece of 1″ x 4″ lumber to make the apron. For this piece, I take the same measurement as I did for the top header 1″ x 6″ (i.e., I measure from the outside of the right side casing to the outside of the left side casing), only this time I measure at the bottom right above the window sill. Again, don’t just assume that the top ...
- Joe Cruz
- Prep the Rough Opening. Not all windows are perfectly centered in their rough opening. To center them, you may have to shim the sides, top or bottom of the opening.
- Measuring. Measure the depth of the window return from the inside face of the window to the wall’s outer surface. Subtract 1/4-inch. Now, measure the height of the side returns from the top to the bottom of the rough opening.
- Cut the Returns. Score the drywall along your line using a utility knife and straightedge. You need to cut through only the paper on the first pass. Let the sheet of drywall overhang your work table past the score line (or place a 2×4 beneath that scored line).
- Attach Returns. Place the drywall return on the underside of the top window return, keeping it 1/4-in. from the window and flush with the wall. Attach the piece with drywall screws, two screws every 12 inches.
1. Rebate or Renovation Flanges: Mounted flush to the outside face of the frame, come in various widths, and are used to cover the area where the old window meets the exterior siding or stucco. This is what Mr. and Mrs. Homeowner thought was their only option when they came in the other day. 2. Nail Flange:
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Aug 8, 2024 · Trim out the biggest windows first. That way, you can reuse miscuts for the smaller windows and not run out of material. When nailing 3/4-in.-thick trim, use 15-gauge 2-1/2-in. nails for the framing and 18-gauge 2-in. brads for nailing to the jamb.
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Trimming Windows. Get the window jambs flush with the drywall, and the casing miters come easily. By Jim Blodgett Issue 137. Synopsis: An experienced builder and trim carpenter shares timeless tips for installing window jamb extensions, stools, and casing. The parts and pieces of window trim.
