Can misty windows be cleaned rather than replaced?

No. Misting occurs between sealed panes where moisture cannot be accessed or cleaned. The only solution is replacing the entire sealed unit. Any company offering to “clean” misty windows is misleading you – it’s impossible without breaking the seal, which destroys the unit anyway.

How long do replacement sealed units last?

Quality replacement units last 20-25 years before seal failure risk increases. It’s a similar lifespan to the original units. We use quality materials and proper sealing techniques ensuring long-term performance.

Will other windows go misty soon?

Not necessarily. Units can fail individually due to localised factors (sun exposure, temperature stress, manufacturing variations). However, if multiple units fail within short periods, systematic issues with installation or frame drainage may exist. We’ll advise if patterns suggest wider problems.

Can you repair all window types?

Yes, we repair all kinds of windows. We manufacture bespoke replacement units for unusual sizes, shapes, or specifications at our Lincoln facility.

Is it worth repairing if windows are 20+ years old?

If frames are sound, yes. Replacing units extends overall window life by another 20+ years at fraction of full replacement cost. Age alone isn’t reason to replace entire windows if frames remain structurally sound and functional.

Misty Window Repairs - True Window & Glass Centre

Misty Window Repairs: Restore Clarity and Insulation

Condensation, misting, or a cloudy appearance between glass panes means your double glazing seal has failed. At True Window & Glass Centre, we fix misty windows by replacing the failed sealed unit whilst keeping your existing frames, hinges, and handles, restoring clarity and thermal performance at a fraction of the cost of complete window replacement.

With over 40 years of experience serving homeowners, landlords, housing associations, and property managers across Lincolnshire, Nottinghamshire, Norfolk, Cambridgeshire, and the Midlands, we manufacture replacement units at our Lincoln facility for fast turnaround and competitive pricing.

What Causes Misty Windows?

Double glazed units consist of two glass panes separated by a sealed gap filled with insulating gas (usually argon). A seal around the perimeter keeps moisture out. When this seal fails through age, UV exposure, or thermal stress, moisture enters the gap between panes, causing visible condensation, misting, or cloudy patterns.
Misty windows don’t look good, and they also indicate complete seal failure, meaning:

Heat escapes through failed units, increasing heating costs

Insulation performance is lost

Condensation can cause mould around frames

Property value and kerb appeal are affected

Failed units will only worsen, never improve

When Do Seals Typically Fail?

Quality double glazed units typically last 20-25 years before seal failure risk increases. Factors affecting lifespan include south-facing exposure (UV damage), temperature extremes, installation quality, and manufacturing quality. Units in properties built 1990s-2000s are now reaching ages where seal failure becomes common.

Our Repair Process:

Assessment – We measure existing units precisely and assess frame condition

Manufacturing – New sealed units manufactured at our Lincoln facility to exact specifications

Installation – Careful removal of failed units, installation of new sealed units with appropriate seals and weatherproofing

Quality Check – Ensure proper fit, thermal performance restored, and weatherproofing complete

Why Repair Rather Than Replace?

Significantly Cheaper
Replacing sealed units costs much less than replacing entire windows. For properties with multiple misty windows, savings are substantial – often thousands of pounds across a house.

Frames Are Usually Fine
If your frames are structurally sound (no rot, warping, or damage), there’s no reason to replace them. UPVC and aluminium frames typically last 30-40+ years – much longer than sealed units.

Fast Turnaround
We manufacture replacement units at our Lincoln facility for fast service. Most repairs are completed within days rather than weeks required for full window replacement.

No Redecoration Required
Unit replacement doesn’t disturb internal or external decoration. Full window replacement often damages plaster, paint, and external finishes requiring redecoration, adding cost and disruption.

Extends Overall Window Life
Replacing failed units extends your windows’ overall life by 20+ years. If frames are good condition, unit replacement is the sensible, cost-effective solution.

40+ Years of Expertise

Since 1983, we’ve been serving Lincolnshire and the surrounding counties with honest, reliable glazing services. Our longevity speaks to our commitment to quality workmanship and customer satisfaction.

With over 2,000 happy clients across the region, we’re proud to be Lincolnshire’s first choice for windows, doors, and conservatories.