Double Glazing Repair in Medway — Expert Local Service by Kent Window Wizard
⭐ 5* Google Reviews | ✅ Certass Certified | 🛡️ 10-Year Guarantee | 📍 Based in Chatham, Medway
If you need double glazing repair in Medway, Kent Window Wizard is your local specialist. Based in Chatham, we cover the whole of Medway — including Rochester, Gillingham, Rainham, Strood, and Gravesend — carrying out fast, affordable repairs and replacements for windows, doors, and conservatories.
With over 20 years of experience, Certass certification, and a 10-year insurance-backed guarantee, we’re trusted by homeowners across Medway to get the job done right, first time. Read our 5* Google reviews to see why.

Our Double Glazing Repair Services in Medway
We fix all types of double glazing faults — usually in a single visit, saving you the cost and disruption of a full window replacement.
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Misted & Cloudy Glass
Failed sealed units replaced without touching the frame — a fraction of the cost of full replacement.
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uPVC Window Repair
Frame adjustments, crack repairs, and full uPVC restoration — all across Medway.
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Handle & Lock Repair
Broken, loose, or seized handles and locking mechanisms replaced — often same day.
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Hinge Repair & Replacement
Stiff, sagging, or broken hinges repaired to restore smooth, secure window operation.
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Draught-Proofing & Seal Replacement
Failed rubber seals replaced to eliminate cold spots and cut your energy bills.
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Door & Conservatory Repairs
uPVC, composite, and patio doors plus conservatory frames repaired across Medway.
🪟 Also need full window replacement? We supply and fit quality replacement double glazing throughout Medway — with the same 10-year guarantee.

Signs Your Double Glazing Needs Repairing
Many double glazing problems are easy to fix if caught early — and much cheaper than leaving them to worsen. Watch out for these common warning signs:
- Misting or condensation between the panes — a clear sign the sealed unit has failed and needs replacing.
- Draughts from closed windows — failed seals or a distorted frame letting cold air in, raising your energy bills.
- Windows that are difficult to open, close, or lock — usually a hinge, handle, or alignment issue that can be fixed quickly.
- Visible cracks, chips, or damage to the glass — a security risk that needs addressing promptly.
- Rattling in the wind — often caused by worn weather seals or loose glazing beads.
- Cold spots near windows — a sign the thermal performance of the double glazing has broken down.
If you’ve noticed any of these signs, don’t wait — get in touch today for a free, no-obligation assessment.
Is It Better to Repair or Replace Double Glazing?
This is the most common question we get asked. The honest answer is: repair is almost always the better option if the frame is still in good condition. Replacing the sealed glass unit — rather than the entire window — costs a fraction of the price and can be done in a matter of hours. We only recommend full replacement when the frame itself is beyond repair, severely damaged, or when energy efficiency improvements justify the upgrade.
We’ll always give you a straight, honest recommendation. If a repair will do the job, that’s what we’ll tell you — even if replacement would earn us more. That’s why Medway homeowners have been trusting us for over 20 years.
Ready to get your double glazing repaired?
Areas We Cover for Double Glazing Repair in Medway
We carry out double glazing repairs and window replacements across the whole of Medway and the surrounding areas of Kent, including:
- Window repair in Chatham — our home base, with fast local response times.
- Window repair in Rochester — serving the historic heart of Medway.
- Window repair in Gillingham — covering the full Gillingham area.
- Window repair in Gravesend — including Northfleet and surrounding villages.
- Window repair in Maidstone — the county town and surrounding areas.
- Window repair in Sittingbourne — and the surrounding Swale area.
We also cover Rainham, Strood, Snodland, Hoo, and all surrounding Medway towns and villages. Not sure if we cover your area? Give us a call — we’re always happy to help.
Why Medway Homeowners Choose Kent Window Wizard
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Locally Based in Chatham
We’re a Medway business serving Medway people. Fast response times, no call centres, a team that knows the local area.
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5* Google Reviews
Our reputation speaks for itself. Read what Medway homeowners say about us on Google.
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20+ Years’ Experience
Founded by Jake, Kent Window Wizard has been repairing and replacing windows across Medway for over two decades.
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Certass Certified Installer
Fully certified and compliant with building regulations — no need to apply for council consent separately.
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10-Year Insurance-Backed Guarantee
Every job comes with a full decade of protection — complete peace of mind long after we’ve left.
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Honest Advice, Always
We’ll tell you if repair is the right answer — and we’ll never recommend work you don’t need.
We offer a full range of services beyond double glazing repair too. View all our services here.
Frequently Asked Questions
How much does double glazing repair cost in Medway?
The cost depends on the type of repair needed. Replacing a failed misted unit typically starts from around £80–£150 per pane, while handle, hinge, or lock repairs are often less. A full window replacement costs more but is still significantly cheaper than having it done through a large national glazing company. We always provide a free, no-obligation quote before starting any work.
Can misted double glazing be repaired without replacing the whole window?
Yes — in most cases, only the glass unit needs replacing, not the entire frame. We remove the failed sealed unit and fit a new one into your existing uPVC or timber frame. This is quicker, less disruptive, and significantly cheaper than a full window replacement. As long as the frame is in good condition, unit replacement is almost always the right call.
How quickly can you repair double glazing in Medway?
Most repairs are completed in a single visit. Handles, hinges, and seals are typically fixed on the day we attend. Misted unit replacements require us to order the new sealed unit first, which usually takes 3–7 working days, and then we’ll return to fit it. We aim to be as fast as possible — we know a draughty or broken window isn’t something you want to wait around for.
Do I need planning permission to repair or replace double glazing in Medway?
For most domestic properties, no planning permission is needed to repair or replace double glazing like-for-like. However, if your home is a listed building or in a conservation area, additional consent may be required. Because we’re Certass certified, our replacement installations are self-certified as compliant with building regulations — saving you the hassle of notifying your local authority separately. We’ll always advise you if we spot any potential issues.
Are Kent Window Wizard Certass certified?
Yes. Kent Window Wizard is a fully registered Certass certified installer. You can verify our certification here. This means every window replacement we carry out meets current building regulations, and you receive the relevant compliance certificate automatically — no need for you to make a separate building control application.
Ready to Book Your Double Glazing Repair in Medway?
Whether it’s a misted unit, a broken handle, a draughty frame, or a full window replacement, Kent Window Wizard is ready to help. We serve the whole of Medway from our base in Chatham — with fast response times, honest pricing, and the peace of mind of a 10-year guarantee. Call us today on 01634 944243, email info@kentwindowwizard.co.uk, or use the contact form below.
Send us a Message
Reach Us
Location :
Kent Window Wizard LTD, Woodhurst, Chatham, Kent, ME5 9SL


