Put up a quality box-shaped garden window, also known as a greenhouse window, to bring in more natural light, make the room feel larger, and bring part of your garden within arm's reach in the kitchen. This model boasts dual-paned glass to maintain your heating and cooling comfort and dollars and makes the ideal setting for indoor herbs and plants.
Remove the sliding glass panel in the old window, grasping it with both hands, lifting it up and pulling the bottom outward off the old window track. Remove the screens the same way.
Remove the center brace and remaining fixed panel as part of the greenhouse window project. Use a hammer and small pry bar to loosen the center brace. Lift the fixed panel off its track as you did for the sliding portion.
Loosen the exterior trim around the garden window opening, first scoring the heavy paint sealing the trim before levering the trim with the pry bar. The trim on the top, bottom, and both sides must be removed.
Pre-cut the caulk that seals the aluminum window frame. Tap with a wood block and hammer from the inside to break the seal and loosen the window frame for removal. It will not be used in the greenhouse window installation.
Drive the small prongs of a nail remover under the nails holding the old wooden window frames. Lever the heads until the nails can be extracted with the larger prongs. Remove the frames which are not required for the greenhouse.
Build up and finish the interior edge of the window opening that will be visible through the new greenhouse window. Nail up spacers/shims to level and then add a two-by-four to the bottom and trim along the top and sides.
Cut away the wooden siding to expose the front edge of two-by-fours at the window's perimeter. The nailing flange of the new greenhouse window will be secured to the front edge of the two-by-fours.
Waterproof the greenhouse window opening with flashing paper and caulk, inserting the flashing paper behind the sheathing, folding the edge back over the siding and taping it temporarily. Caulk generously along the wooden edge of the opening.
Insert the garden window into the opening and secure it with rust-proof screws driven through the nailing flange into the two-by-four framing beneath. Caulk the edges. Remove the tape and fold the flashing paper over the nailing flange.
Finish the edges of the greenhouse window, nailing filler strips over the nailing strip to provide a nailing surface for the new trim. Caulk the backs of the trim and secure them in place. Paint to match.