Misted window repair · St James
Misted double glazing & condensation between panes fixed in St James
If you're in St James and need misted window repair, you're in the right place. Condensation trapped between the panes means the seal on your double glazed unit has failed. In St James 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 St James
- No call-out fee
- Guaranteed workmanship
Signs your sealed unit has blown
- Mist that comes and goes with the weather and sunlight
- Room feels colder near the window than it used to
- Visible gaps or cracks in the spacer bar around the edge
- 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.
What causes the problem — common faults we see in St James
Age of the seal
Sealed units are bonded with a perimeter sealant that slowly breaks down. After 10–20 years many units start letting moist air in between the panes.
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.
Covering St James and nearby
We work in and around St James every week, so travel is never added to your quote.
As well as St James, we look after the rest of Northampton, including Delapre, Upton, Spinney Hill and West Hunsbury.
Most misted window repair jobs in St James are quoted on the first visit, with no obligation.
Misted window repair in St James: FAQs
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 I upgrade the glass at the same time?
Absolutely — choose obscure privacy glass, toughened safety glass or higher energy-rated glass.
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 St James?
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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