Misted double glazing repair in Exeter
Professional misted double glazing repair services in Exeter and surrounding areas. Local, reliable handyman - no job too small.
Price Guide
Quote - depends on size
Typical Duration
Per unit
Location
Exeter, Devon
Misted double glazing units replaced to restore clear view. Failed sealed units removed and new units fitted into your existing frames - much cheaper than new windows.
It's the Glass Unit That's Failed, Not the Whole Window
Condensation between the panes that you can't wipe off? Your sealed unit has failed. The seal around the edge has broken down and moisture has got between the glass. Everyone panics and thinks they need new windows. Usually? You just need new sealed glass units.
💡 Pro tip: Window companies push for full replacements because they make more money. Replacing just the sealed unit is often 1/3 the cost and gives you another 15-20 years. Your frames are probably fine.
Why This Isn't a DIY Job
Sealed units are heavy, fragile, need exact measurements, and the glazing has to be done right.
| ✅ Done Right | ❌ Done Wrong |
|---|---|
| Exact measurements for new unit | Wrong size, doesn't fit or too much gap |
| Correct glass spec (thickness, toughened, coating) | Single glazed or wrong thickness |
| Proper toe-and-heel glazing with packers | Unit not sitting right, can crack |
| Frame cleaned, beads refitted neatly | Beads broken getting old unit out |
What You Get
🔧 The Full Service
| Stage | What Happens |
|---|---|
| Assessment | Measure unit, check frame condition, spec the glass |
| Order | Source new sealed unit to exact spec |
| Removal | Carefully remove glazing beads and old failed unit |
| Installation | Fit new unit with correct glazing technique |
| Finishing | Refit beads, clean up, test operation |
📦 Included
- New sealed double glazed unit to spec
- Removal and disposal of old unit
- New glazing seals if needed
- Guarantee on unit and fitting
Pricing
This is quote-based pricing because every window is different:
| Window Size Guide | Typical Range |
|---|---|
| Small window (600x900mm) | £150-£200 |
| Standard window (1200x1200mm) | £200-£300 |
| Large window/patio door | £300-£500+ |
Depends on size, glass thickness, toughened requirement, coatings. I measure and quote before ordering.
Perfect For Your Project If...
✅ Condensation between panes - classic sign of seal failure
✅ Cloudy or milky appearance - moisture has got in
✅ UPVC windows 10+ years old - common age for seal failure
✅ Frame is sound - if frame is fine, just replace the glass
❌ Avoid if: Frame is rotten, rusted, or damaged - might be time for full replacement
Why Choose Us for Misted double glazing repair in Exeter?
Replace just the glass unit, not the whole window
Restore clear view and insulation
Much cheaper than new window installation
Works for UPVC, timber, and aluminium frames
What to Expect
Step 1: Assessment & Measure
I measure the existing unit precisely and check what spec glass you've got. Need to match thickness, whether it's toughened (required for doors and low windows), what coatings are on it (low-E for insulation). Also check the frame condition - if frame is knackered, no point fitting new glass.
Step 2: Order & Wait
New sealed units are made to order - typically 5-10 working days from glass supplier. I'll give you a lead time when ordering.
Step 3: Glazing Work
Remove the glazing beads carefully (easy to break these on old UPVC). Lift out old failed unit. Clean the frame rebate properly. Fit the new sealed unit using proper toe-and-heel glazing technique with packers for support. Replace glazing beads. Clean glass. Test window operation.
🔧 DIY Tips
This is NOT a recommended DIY job, but here's what's involved if you're determined:
⚠️ Why it's tricky for DIY:
- Sealed units are heavy (even small ones) and awkward
- Very fragile - easy to crack during handling
- Need exact measurements to nearest mm
- Glazing technique matters or unit can fail/crack
- Breaking glazing beads is easy, replacing them is expensive
- Disposing of old glass unit is a pain
🔧 If you're still going ahead:
- Measure the frame rebate precisely, not the old glass
- Measure thickness of existing unit
- Check if toughened is required (doors, low windows)
- Order unit from glass supplier (not DIY shed)
- Use glazing packers for toe-and-heel support
- Don't overtighten beads - can crack glass
📏 Critical measurements needed:
- Width and height of frame rebate
- Thickness of existing sealed unit (usually 24mm or 28mm)
- Any special glass (toughened, frosted, Georgian bars)
💡 Pro advice: Unless you're very confident and have done glazing before, this is one to leave to someone who does it regularly. The cost of getting it wrong (smashed £200 glass unit) usually exceeds the cost of getting someone to do it.
Rather leave it to a pro? No problem - that's what I'm here for. Give me a call.
Good to Know
🏠 Multiple misted units? If you've got several failed units, likely they all went in at the same time and will all fail around the same age. Worth doing them all together - I'm already set up and you'll save on multiple callout costs.
Toughened glass requirement: Building regs require toughened (safety) glass for:
- Doors and door side panels
- Windows within 800mm of floor level
- Large panes over certain sizes This affects the cost - toughened costs more than standard float glass.
Old Georgian bar windows: If you've got stick-on bars between the panes, these can't be reused. You can have new sealed units made with bars, but it adds cost. Alternative is to have the bars on the outside only, or ditch them completely for a cleaner look.
Guarantee: New sealed units typically come with 10 year manufacturer guarantee against seal failure. Keep your paperwork.
Timing: Don't leave misted units for years thinking it doesn't matter. The longer moisture is trapped between panes, the more likely you'll get staining or mould between the glass that won't clean off. Get it sorted while you can still have clear glass.
Frequently Asked Questions
What causes double glazing to mist up?
The seal between the two panes of glass has failed. Double glazed units are sealed around the edges with moisture inside removed. When that seal fails (usually after 10-20 years), moisture gets in and condenses between the panes. Once that happens, it doesn't fix itself - the unit needs replacing.
Can you just replace the glass unit or do I need a whole new window?
Just the sealed glass unit in most cases. The frame is usually fine - it's only the glass sandwich that's failed. I remove the glazing beads, take out the old unit, measure up, order a new sealed unit with the right spec, then fit it back into your existing frame. Saves you hundreds.
How much does it cost to replace a misted double glazed unit?
Depends on the size and glass spec. A standard bedroom window might be £150-200 for the unit and fitting. Large patio door could be £400+. I need to measure and check the glass spec (thickness, toughened, low-E coating etc) to give an accurate quote.
How long does a replacement sealed unit last?
New sealed units typically come with 10 year guarantees and should last 15-25 years depending on quality and exposure. South-facing windows in direct sun might fail sooner. Same as your original units - they degrade over time.
Can you do it for any type of window frame?
Most types yes - UPVC, timber, aluminium. The trickiest are really old or non-standard frames where the glazing system is unusual. I'll assess and tell you honestly if it's doable. Some very old windows are better fully replaced because the frames are shot too.
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