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Installing a larger window. Frame support question.

Installing a larger window. Frame support question.

Old 09-12-07, 11:07 AM
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Installing a larger window. Frame support question.

Hi .. i have an existing window which is about 3 feet wide. I would like to replace the window with a larger one, anywhere from 4 to 6 feet wide to get more light in the room. I am guessing this would be ok as long as i build a support frame with headers and jacks. Is this ok?

If so, how do i support the studs once i remove the existing window and cut the additional studs to make room for the new larger window. Thanks.
Old 09-12-07, 11:32 AM
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Away from your window about a couple of feet or so, build a false wall with top and bottom plate with studs firmly in place. This will hold your house up while you do your r&r. Build a proper header with jacks, kings, etc. as you mentioned, and apparently have sufficient knowledge. Post back if we can help further on it.
Old 09-12-07, 11:40 AM
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Installation of larger window

When you purchase your new window there will be rough-in information with it.

Use 2x6" boards as a header. Nail or screw two boards together. They need to be as long as the rough-in calls for, but allow 3 or 4 inches longer because each end needs to set on top of your 2x4 studs in the wall. Each end of the header should rest on two 2x4 studs nailed together.

Same for the bottom of the window but you can use two
2x4's nail together and setting on 2x4 jack post, one under each corner and one in the center of window.

I always make my rough-in a half inch larger than the window and use shims for alignment. Do your caulking on top and bottom of window before you slide it in. Do shimed area caulking after it's level.

Remember: If you are taking out a larger area of wall, you will need to put jack post (2x4's) on top of the header you built to support the weight above the window.

Duke of ....

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