Misted window repair · Duston
Misted double glazing & condensation between panes fixed in Duston
Homeowners across Duston call us for misted window repair. Condensation trapped between the panes means the seal on your double glazed unit has failed. In Duston we measure, make and fit a brand-new sealed unit into your existing uPVC, aluminium or timber frame — restoring clear views and insulation for a fraction of the cost of a new window.
- Local engineers in Duston
- No call-out fee
- Guaranteed workmanship
Signs your sealed unit has blown
- Visible gaps or cracks in the spacer bar around the edge
- Mist that comes and goes with the weather and sunlight
- Room feels colder near the window than it used to
- Fog or droplets between the two panes that won't wipe off
- White streaks or cloudy staining inside the glass
How we replace a misted unit
1. Measure
We measure the glass precisely and check the frame, beads and drainage.
2. Manufacture
Your new unit is made to size — clear, obscure, toughened or A-rated energy glass.
3. Fit
The old unit comes out, the new one goes in and the beads are refitted. Usually under an hour per window.
Replacing only the glass unit keeps your frames, avoids building work and typically costs far less than a whole new window.
The real causes behind misted window repair jobs in Duston
Poor original fitting
Units fitted without proper packers can sit on the frame unevenly, putting pressure on one corner and splitting the seal early.
Pressure washing and harsh cleaners
Jetting directly at the glass edge or using solvent cleaners on the seals can force water past the gaskets and weaken the bond.
Sun and temperature swings
South and west-facing glass heats and cools every day. That constant expansion and contraction stresses the edge seal until it fails.
Why Duston customers choose us
We work in and around Duston every week, so travel is never added to your quote.
We also cover nearby Collingtree, Brackmills, Hardingstone and Abington, so if you know neighbours with the same problem we can often visit on the same day.
Send a photo with your enquiry and we can often give a rough price for Duston before we visit.
Misted window repair in Duston: FAQs
Can I upgrade the glass at the same time?
Absolutely — choose obscure privacy glass, toughened safety glass or higher energy-rated glass.
Is the new glass guaranteed?
Yes, every replacement sealed unit comes with our 10-year glass guarantee.
Why is there condensation inside my double glazing?
Condensation between the panes means the unit's seal has failed and moist air has got in. It can't be wiped away — the sealed unit needs replacing.
Can misted double glazing be fixed without replacing the window?
Yes. We swap just the sealed glass unit and reuse your existing frame, so there is no mess and no planning needed.
How quickly can you replace a misted unit in Duston?
We measure on the first visit and return to fit once the unit is made — usually within one to two weeks.
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