Window Draught & Seal Repair in Tunbridge Wells
Cold air, whistling and condensation cured by replacing the rubber gaskets that have hardened over time. From £60 per window.
If you can feel cold air with a closed window, hear a faint whistle on windy days, or you've started to see condensation pooling on the inside cill, the rubber gaskets that seal the sash to the frame have almost certainly hardened. They're a wear part. We renew them.
Stop the draught. Keep the frame.
What the gasket does and why it fails
Every UPVC and aluminium window has two lines of rubber gasket — one in the sash, one in the frame — that compress together when the window is closed. Over 10–15 years UV and temperature cycling turn the rubber brittle. The compression is lost, gaps open up, and heat walks out. The fix is to peel out the old gasket and feed in new closed-cell rubber to the same profile.
- Glazing-bead gaskets: The inner rubber that holds the glass into the sash — replaced where the seal has dried out and pulled away.
- Sash-to-frame gaskets: The outer rubber that seals the closing edge — the main draught and water barrier.
- Brush strips: Renewed on sliding sashes and patio doors where the felt brushes have worn flat.
- Threshold & door drop-seals: Adjusted or replaced on doors that have lost compression at the bottom.
- Aluminium gasket profiles: Specialist gaskets matched to common aluminium systems (Smart, Sapa, Origin and similar).
We carry a small stock of common gasket profiles on the van. Less common profiles are ordered to match a sample and fitted on a return visit.
Why repair, not replace?
Seal replacement is the cheapest single thing you can do to improve a window's thermal performance. Spending £60–£90 per window on new gaskets restores most of the original draught resistance for a fraction of the cost of replacement glazing or a new frame.
Clear pricing. No upselling. No pressure. Every job is backed by a written guarantee.
Where we work
We're a mobile service — we come to you. We cover Tunbridge Wells and the surrounding TN postcode towns. If your postcode starts TN1–TN12, we've almost certainly worked on your street.
Tunbridge Wells Hub
Southborough | Rusthall | St John's | High Brooms | Hawkenbury | Langton Green | Speldhurst | Bidborough | Pembury
Tonbridge Hub
Hildenborough | Tonbridge Town Centre
Paddock Wood Hub
Paddock Wood | Brenchley | Horsmonden
Frequently asked questions
Real questions from real customers in Tunbridge Wells and Tonbridge.
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How do I know if my seals have gone?
Three quick tests. (1) Run your hand around the closed window — if you can feel a cool stream of air, the seal isn't compressing. (2) Pinch the rubber between thumb and finger — if it stays squashed instead of springing back, it's hardened. (3) Look for condensation collecting on the inside cill in cold weather.
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Is this the same as the failed sealed glass unit?
No — different fault. The sealed unit is the edge seal between the two panes of glass; when that fails, you get fog inside the glass. The gasket is the rubber between the sash and the frame; when that fails, you get cold air. We can fix either, but the parts and price are different.
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Do you do whole-house seal renewal?
Yes — popular with landlords meeting MEES energy compliance and homeowners preparing for winter. We quote per window, so you can stage the work if you'd rather.
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Will new seals stop my condensation problem?
If the condensation is forming on the inside surface of the glass, ventilation is part of the story — see our trickle vent installation page. If it's forming on the cill or running down the frame edge, new seals usually fix it.
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What about aluminium windows?
Yes. Aluminium gaskets are profile-specific so we'll usually take a 50mm sample on the survey and order a matching length to fit on the return visit.
