Windows and Doors/Bay window


I have a 4 window double hung Andersen bay about 20 yrs old. When installed the contractor used cables for support. It is starting to sag on the right side (looking from outside). What is the best way to level it?

Hi Rich,

If the window has remained level for 20 years and just recently sagged it suggests that either the cable or cable mounting hardware has become broken or loosened.  Alternatively, structural damage from decay or termites may also result in the window sagging.  I urge you to ascertain if decay or insect damage is the cause of the problem and make repairs as needed.  

Disassembling the window trim and boxing will likely be required to diagnose the cause of the sagging.  Once the framing is exposed, repairing any structural damage will also provide adequate structural support to reattach any loose cable mounting hardware.  Once repairs are completed and the cables are properly attached the window can be leveled the same as when it was initially installed.

The addition of support brackets on the bottom of the window is another way to support and level a bay window, provided the braces are positioned in such a way as to take advantage of the vertical support members of the window jambs.  

I hope I have been of some help in this matter.

Best regards,

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Tony Wood


I can answer questions regarding style, function, and construction features on a wide range of windows and doors. I also have extensive experience in the repair and replacement of many types of windows and doors. My expertise also includes carpentry, painting, framing, siding/boxing, decks and screen and glass enclosures. Wood's Home Maintenance Service


I am a life time resident of North Carolina with over 30 years experience in multiple facets of the industrial, commercial and residential construction industry. For the past 23 years I have owned and operated Wood's Home Maintenance Service, providing services primarily in Johnston, Wake and Sampson Counties of North Carolina.


Several Home improvement articles published on Angie's List and other online forums including an interview by North Carolina Homes.

High School graduate ~ proficient in CAD (computer aided design), Open Office program suite. I have also successfully owned and operated Wood's Home Maintenance Service for the past 23 years

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