Windows
Do Replacement Windows Make the Glass Smaller?
Sometimes, a little. An insert replacement sets the new window inside your old frame, so the new frame adds a border and the glass shrinks slightly. A full-frame replacement takes the old window out down to the studs, so the glass can stay about the same size. Which one fits depends on the shape your current frames are in.
Updated
Why the Glass Can Shrink
A frame inside a frame
With an insert, the new window fits inside the old frame. The old frame stays, the new frame sits inside it, and that extra border takes a bit of glass.
Thicker vinyl frames
Many vinyl frames are wider than old wood ones. On an insert, that width comes out of the glass area.
Damage decides it
If the old frame has rot, water damage or is out of square, an insert just covers the problem. Those openings need a full-frame replacement.
Full frame keeps the view
Full-frame replacement removes the old window and trim down to the opening, so the new window can use the whole space. It is more work and takes longer.
How to Check Yours
- 1
Press on the wood around the window, inside and out. Soft or crumbling spots mean rot, which rules out an insert.
- 2
Look for water stains on the sill, the wall below the window or the ceiling above it.
- 3
Open and close each window. One that sticks or leaves a gap at the top can mean the frame is out of square.
- 4
Measure the glass on one window you care about. When you get a quote, ask how big the new glass will be on that window.
If you care about keeping every inch of your view, say so at the estimate. We will look at the frames and tell you honestly whether an insert will do or the opening needs a full-frame replacement.
Common Questions
How much glass do insert windows lose?
A little, because the new frame sits inside the old one. This Old House describes it as a slight reduction. The exact amount depends on the window and the frame, so ask for the new glass size on your own windows.
Is an insert replacement a bad choice?
No. When the old frames are solid, square and dry, an insert is faster and less disruptive, and it keeps your existing trim. It is the wrong choice when the frame is rotted or leaking.
When do I need full-frame replacement?
When the frame has rot, water damage or warping, when it no longer seals, or when you want to change the size or shape of the window.
Does Renovate Right 365 do both kinds?
We will look at your frames and tell you which kind each opening needs, and why. You will know before you decide.
Sources
Want a Straight Answer on Yours?
Renovate Right 365 will look at it in person and tell you whether it needs a repair, a replacement, or nothing at all. Or call (877) 517-7365.
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