When to Repair vs When to Replace Your Double Glazing
Not all double glazing problems require a full window replacement. At Restoration Glazing, we assess every job honestly and recommend the most cost-effective solution — whether that's a straightforward sealed unit replacement or a complete new window.
Misted or foggy windows are the most common double glazing problem in Southampton. When the seal around a double glazed unit fails, moisture enters the gap between the panes, causing condensation you can't wipe away. In most cases, we can replace just the glass unit — keeping your existing frames — at a fraction of the cost of a full window replacement.
Repair Is Usually Best When:
- Sealed units are misted or foggy
- A single pane is cracked or broken
- Handles, hinges or locks have failed
- Rubber seals need replacing
- Frames are structurally sound
Replacement Is Better When:
- Frames are warped, cracked or rotten
- Windows are over 20 years old
- Multiple units have failed across the property
- You want to upgrade to A-rated energy efficient glass
- Security upgrades are needed
Typical Costs
Double glazing repair costs in Southampton depend on the type of work needed:
- • Misted sealed unit replacement: from £60–£120 per unit
- • Broken glass replacement: from £80–£200 per pane
- • Handle or lock replacement: from £30–£60 per item
- • Full window replacement (supply & fit): from £350–£800 per window depending on size and specification
We always provide a free, no-obligation quote before any work begins. There's no call-out charge and no pressure to proceed.