Build A Window Frame Sill

The decorative raised section below the window sill.

Build a window frame sill.

I ll show you how we made ours and you ll see it s not terribly difficult. Frame a window frame is the framework that surrounds and supports the entire window system. Cutting right up to the line usually leaves pieces too long. The sides and top of the frame should be the same thickness or depth as the rough opening.

When i told lisa that i needed to make a new sill she asked me if we could just buy one at lowe s. If you didn t know you can t really buy window sills. You may be able to find some online but the best way to get a window sill is to make them. Measure the sides top and bottom of the rough opening to determine the overall.

It is comprised of the head jamb and sill. The external horizontal bottom part of the frame that protects from water intrusion and can be used as a decorative element. Begin with kiln dried wood or high quality precast foam and measure and cut precisely. Measure the distance between the two vertical sides of the window opening and add 6 inches.

Materials 2 x 6 kiln dried lumber or other sizes depending on your needs 1 lb box of 2 1 2 deckmate screws wood or composite shims loose insulation window caulk 1 finishing nails. Measure for the top starting at the finished floor. The sill has. Jambs jambs are the main vertical parts forming the sides of a window frame.

They re really nothing more than a flat piece of wood that fits in the bottom of. Head the head is the main horizontal part forming the top of the window frame. Window sills are basic. My website is http www bucklehurstleather co uk making traditional jointed window frames mostly using hand tools and a haunched mortise and tenon joint.

For the bottom measure up 27 inches 30 inches for the new window height 3 inches for the rough sill and mark the studs there. Remove the pencil line with the saw blade. How to make window sills casings basic training. How to make a window frame step 1.

In the meantime here are some tips to get you started. Fill gaps with wood filler strips not caulk.