Are you sure it is a Bay window or is it s Bow window?
A Bay window is made by projecting the foundation or cantilevering the floor joists so that you can actually walk into it. A Bay window, in other words, goes from floor to ceiling.
A Bow window, on the other hand, is simply a projected outward picture window.
If you really have a Bay window and it is sagging, you have some major structural problems that need to be addressed.
Bay windows need to either sit supported by a normal foundation or by properly installed joist canitlevers.
If you really have a sagging Bay window,it means either the foundation is failing or that the cantilevered floor joists have not been installed properly and to correct either problem could cost thousands.
A sagging Bow window, however, might be corrected by placing the proper angular supports under the bottom of its projection and could cost only a few hundred to correct.
You would do best to hire a professional contractor who can assess the problem and make a proper correction, then deduct it from the cost of the house, have the owner’s agree to pay to ahve it fixed. or walk away from a bad deal.
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