Window frame replacement cost

Question

Two of our uPVC window frames have cracked quite badly and are draughty. We're not looking to replace the glass, just the frames. Is that even possible and what does it cost?

Edgaras · Answer

Yes, it is technically possible to replace just the uPVC frames and keep the existing glass units, but in most cases it’s not recommended or cost-effective.
Double or triple glazed units are usually manufactured specifically for each frame, so removing and refitting them into new frames can be risky. There’s a high chance of damaging the sealed units or ending up with poor insulation and sealing.
In terms of cost, replacing only the frames often ends up very close to the price of a full window replacement (frame + glass), because:
Labour is almost the same
You still need proper sealing and making good internally/externally
There’s no warranty on reused glass in most cases
For two average-sized uPVC windows in the UK, you’re typically looking at:
£400–£800 per window for full replacement (supply & fit)
Frames-only (if done) might save very little and can create future issues
If your frames are cracked and draughty, the best long-term solution is a full replacement with new energy-efficient units. You’ll get:
Better insulation (lower heating bills)
Full guarantee
Compliance with building regulations
If you want, I can give you a more accurate estimate based on sizes or photos.
If you want, I can make a more “sales aggressive” version that pulls them straight into contacting ED Property Services.

Window frame replacement cost

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