How to Replace Double-Paned Aluminum Windows in a Brick House

Remove the storm windows from the outside of the window frame. Most aluminum storm windows are attached with screws and can be removed with a screwdriver or a drill.

Pry off the interior and exterior face trim to expose the edges of the window frame, using a crowbar or a claw hammer.

Cut through the nails that hold the window frame into the rough opening by running a reciprocal saw around the perimeter of the window, between the outside of the window frame and the inside of the rough opening. Hold the reciprocal saw at a distance so that its blade doesn't hit the exterior brick.

Pull the old window out of the opening from the inside, to avoid the risk of damaging the brick exterior as you pull out the window.

Clean out the rough opening, removing any bits of wood, dust and other loose material. Drive cut nails that are sticking into the opening and difficult to remove back into the studs with a hammer. Use a vacuum to clean the opening.

Place the new window into the rough opening. Place shims between the new window frame and the rough opening on both sides and the top and bottom of the frame. Place pairs of shims from the inside and the outside so the two overlap, creating a flat surface that presses against the window. Adjust the shims so that the window is level and square within the opening.

Drive nails through the window frame, through the shims and into the inside face of the rough opening.

Trim the shims off with a sharp utility knife so they are flush with the window frame.

Insulate around the window by applying low-expansion foam insulation around the gap between the window frame and the rough opening.

Replace the interior and the exterior face trim.