Learn how to remove and replace steel casement windows with full frame replacement windows. This article includes removing the interior and exterior trim, getting the old window out and installing the new window so it is plumb and square, caulking it and installing the trim to finish. Steel casement windows provided functionality, good looks, and if maintained properly, a durability unmatched by any other window.
However, old steel casement windows tend to leak air and moisture as they grow older. In historic buildings, they can be restored or replaced. For most homes, replacement with aluminum, vinyl or wood is the most practical solution. Remove the interior trim. First, cut the seal made between the molding and the paint with a utility knife.
Push a stiff putty knife between the molding and the wall near a corner of the trim and pry it loose. Work all the way around a window, then switch to a small, flat pry bar. Remove the nails from the molding by pulling them out through the back with large pliers. Measure the rough frame to determine what size window to order.
Place your order and wait for the new windows to arrive. Measure the new windows to make sure they will fit before you remove the old windows. Remove the exterior trim to expose the window nailing fin. If there is no nailing fin, the steel window frame is screwed directly into the rough frame. Remove the nails from the nailing fin. Be sure not to remove or damage the thin, metal flashing at the top of the window.
At this point, you should be able to lift the window out of the opening. Get a helper—steel windows are heavy. First, set the window into the opening and center it. Place a level on the bottom frame and use shims to level it. Are they leaking air or can you see the world outside through cracks in the cement?
Are your windows outdated and just not cutting it anymore? Basement window replacement is an easier, cheaper replacement than most other windows in the house, and taking the time to replace old, leaking basement windows can cut down on your heating and cooling costs. There are two main types of basement windows, those with window frames secured in concrete and those with steel bucks instead of window frames; bucks are deeply embedded steel boxes, which house window inserts--or window sashes that fit directly in the box.
Both basement window replacement processes are easy, but this page deals with how to replace a basement window in concrete and should work on most aluminum or steel windows which have frames directly embedded in the concrete. For help replacing basement inserts, see our video here. Javascript is disabled on your browser.
To view this site, you must enable JavaScript or upgrade to a JavaScript-capable browser. In this specific basement window replacement case, we needed to remove the louvers, or glass slats, in this jalousie window. It could be a hopper or awning sash, however. Once you've removed the innards of the window, it's time to attack the frame. The goal here is to get down to the rough opening in the concrete. It's not the easiest task in the world, because the frame has been secured to the concrete.
However, it is not impossible! Take a reciprocating saw with a metal-cutting blade and make a deep cut in the middle of the bottom of the frame. This will weaken the strength of the frame and allow you to wedge a pry bar in between the concrete and the aluminum or steel frame. Work one side of the frame at a time--using the pry bar to get a grip on the frame and carefully wedge it out of the rough opening. If your frame is steel, you will most likely have to make a cut with the reciprocating saw on every side of the frame, because it is much harder than aluminum to pry off.
Once you get the window frame, you're left with the rough opening in the concrete. This is what you need to measure if you still need to purchase replacement windows.
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