Then cut your pieces of molding to fit inside the window.
Building out a window frame.
Install a 3 4 inch dado blade on a table saw.
Take the jamb size and sill height into consideration when planning the placement.
Decide which studs will have to be cut to install the new frame and which can be kept to use again.
Cut each edge of your four planks at a 45 angle and sand them down so they fit together smoothly.
Measure from the drywall on the inside to the.
Measure the length and width of the window opening.
How to make a window frame step 1.
Measure the sides top and bottom of the rough opening to determine the overall.
The sides and top of the frame should be the same thickness or depth as the rough opening.
To build a new window frame in an existing wall first remove the interior wall covering and any insulation to expose the studs.
To make the frame even more sturdy use your hammer and nails and nail the pieces together at the corners.
If you want to add a decorative cross of wood molding in the middle of the frame measure the inside width and length of your window frame.
Glue the pieces together with wood glue and leave them to dry.
Measure perpendicularly across the rough opening of the window.
Cut four pieces one for each side using a miter saw.