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Kent · England

Misted Glass Repair in Kent

Cloudy, streaky double glazing in Kent is usually a failed sealed unit, and we can quote to replace it without disturbing the frame.

  • Guide from £155
  • 23 towns covered
  • Postcode areas BR, CT, DA, ME, TN

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About misted window repair in Kent

Check the paperwork for your windows before booking. Many sealed units come with a manufacturer guarantee against misting, and if your windows are still covered, the original installer or manufacturer may be responsible for replacing the failed unit under its terms.

Common causes of seal failure include water sitting in the frame rebate because drainage holes are blocked, units fitted without correct packers, strong sun on dark frames, and age. Clearing the drainage slots in the frame helps protect the new unit from the same problem.

Some services offer to drill the glass, flush the cavity and add a vent instead of replacing the unit. This can improve the look, but it does not restore the original seal, and any gas fill that helped the unit insulate has already been lost. Replacement restores a sealed cavity.

Condensation on the room-side surface of the glass is not the same problem. It usually comes from humid indoor air meeting a cold pane and can be wiped away. Only mist trapped between the two panes means the sealed unit itself has failed and needs replacing.

Window with one misted double glazed pane beside a clear pane

What applies in Kent

Approved Document K requires safety glass in critical locations in England: glazing in doors and in side panels within 300 mm of a door, up to 1500 mm above floor level, and any glazing in walls or partitions up to 800 mm above floor level.

Approved Document L sets the minimum energy performance for replacement windows and doors in existing homes in England: a U-value of 1.4 W/m²K, or Window Energy Rating band B for windows; doors can instead meet a Door Set Energy Rating (band B, or band C for doors more than 60% glazed); rooflights need 2.2 W/m²K.

Kent has its own coastline, so for homes and businesses near the sea, salt air and wind-driven rain are part of the brief. Salt air and wind-driven rain put extra strain on sealed unit edges in coastal homes. Keeping frame drainage clear and gaskets in good order matters more, and the glazier checks both so the replacement unit is not sitting in trapped water.

Older rural homes may have timber frames or units of non-standard sizes, so careful measuring at the survey matters. Exposed sites with driving rain place more strain on seals, and the glazier checks frame drainage and bead condition before fitting.

Guide prices

Guide prices inc VAT for typical jobs. Remote and island locations are quoted by arrangement. Your written quote fixes the price after measuring.
Typical jobGuide price inc VAT
One misted unit, 600 × 900 mm£155 – £195
Two misted units, 600 × 900 mm£305 – £395
Four misted units, 600 × 1100 mm£685 – £875
Misted unit in a door, toughened£305 – £385

Choosing your misted glass repair

Toughened safety unit

Both panes toughened, for misted units in doors, beside doors or low down where safety glass is required.

Obscure glass unit

Patterned glass for bathrooms, landings and front doors, chosen to match existing obscure panes or to add privacy.

Georgian bar or leaded

Decorative bars or lead designs remade to match the originals so the new unit lines up with neighbouring windows.

Like-for-like clear unit

A direct replacement matching the thickness and look of the original unit, for windows where no change in performance is needed.

Misted Glass Repair in Kent: questions

Is it worth replacing misted units or should I get new windows?

If the frames are sound, square and the hinges and locks work, replacing only the misted units is usually the more economical option. New windows make more sense if the frames are rotten, warped, draughty or hard to open. The glazier checks the frames at the survey and the quote will say if replacing units is not good value.

Why has condensation appeared between my double glazing panes?

Condensation between the panes means the edge seal of the sealed unit has failed. Damp air has got into the cavity, and the drying agent in the spacer bar can no longer absorb it. The cause is often age, water sitting in the frame, poor packing or strong sun on the frame. The fix is to replace the sealed unit.

How long does it take to replace a misted unit?

There are usually two visits. The first is a survey to measure each unit. The second is fitting, once the new units have been made to order. Fitting usually takes a short time per window, with little mess. Your quote sets out when the units are expected, and we will tell you honestly when a glazier can attend.

Can you clean the inside of a misted double glazing unit?

Not without breaking the seal. Some firms drill the glass, flush the cavity and fit a small vent, which can clear the mist for a while. It does not restore an airtight seal or gas fill, and white staining may not fully clear. Replacing the unit is the reliable way to restore a clear, sealed cavity.

Which parts of Kent do you cover for misted glass repair?

We cover the whole of Kent, including Maidstone, Gillingham, Chatham, Tunbridge Wells and Folkestone, and postcode areas BR, CT, DA, ME, TN. Building rules for misted glass repair here follow the regulations for England. Enter your postcode on the quote form and we will confirm cover; then a glazier will arrange a free survey before giving you a written quote.

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