Re-Seal Windows
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Worn, cracked or poorly fitted window seals can allow unwanted draughts and rainwater around an otherwise serviceable window. In many cases, renewing the affected seals can restore weather resistance without replacing the complete window.
Window Doctor provides professional window re-sealing through our nationwide network of local branches, covering windows in residential and commercial properties.
Depending on the window and the cause of the problem, our engineers can replace damaged rubber seals and gaskets, renew draught-proofing materials, replace suitable glazing seals and restore deteriorated mastic, silicone or traditional glazing putty. Call us today on 0800 043 0095 for a free quote and have your windows re-sealed by the best!
From £5.17/m
Common Reasons To Re-Seal Windows:
Window seals are exposed to repeated movement, changing temperatures, sunlight and weather throughout their service life. Over time, individual sealing materials can deteriorate or lose their effectiveness.
Common reasons for re-sealing windows include:
- Cracked or brittle rubber seals – ageing gaskets can harden and lose the flexibility needed to maintain effective contact.
- Torn or damaged seals – physical damage can leave gaps around opening windows or glazing.
- Flattened or compressed seals – seals that no longer recover their shape may not make consistent contact when the window closes.
- Loose or displaced gaskets – rubber seals can move out of position and stop sealing correctly.
- Shrunken window seals – some ageing seals can contract, leaving gaps around corners or joints.
- Poorly fitted replacement seals – an incorrect seal profile or unsuitable installation can prevent effective sealing.
- Draughts around closed windows – unwanted airflow may indicate deteriorated seals or another closing problem.
- Water ingress around windows – failed weatherproofing or perimeter sealing can provide a route for rainwater.
- Deteriorated external mastic or silicone – cracked or separated perimeter sealant can compromise the junction between the frame and surrounding opening.
- Worn draught-proofing strips – foam and weatherstripping can deteriorate through age and repeated use.
- Deteriorated traditional glazing putty – cracked, loose or missing putty may require renewal on suitable traditionally glazed windows.
- Glazing seal deterioration – seals around suitable glass installations may require replacement as part of glazing repairs.
There isn’t a fixed age at which every window seal needs replacing. Condition, exposure, material and installation all affect how long sealing components remain serviceable.
Our Window Re-Sealing Services:
Window Doctor provides window re-sealing and weatherproofing repairs for residential and commercial installations.
Our services include:
Window re-sealing Replacement of rubber seals and gaskets Draught-proofing Replacement weatherstrips Traditional glazing putty replacement Repairs to loose or displaced window seals uPVC, Aluminium & Timber window re-sealing Assessment of draughty and leaking windows
If your windows have cracked seals, deteriorated perimeter sealant, unwanted draughts or other sealing problems, contact Window Doctor. Through our nationwide network of local branches, an experienced engineer can assess the existing seals, identify the appropriate repair and provide a free, no-obligation quote for professional window re-sealing.
Frequently Asked Questions - FAQs
How do I know if my window seals need replacing?
Common signs include cracked, brittle, torn, flattened or loose rubber seals, visible gaps and unwanted draughts around a closed window. However, similar symptoms can be caused by poor alignment or faulty hardware, so the window should be assessed before assuming the seals need replacing.
How often should window seals be replaced?
There isn't a universal replacement interval. The lifespan of window seals depends on their material, quality, installation, exposure and use. Seals should generally be replaced based on their condition and performance rather than automatically after a fixed number of years.
Can you re-seal around the outside of a window frame?
Yes. Where deteriorated mastic or silicone around the perimeter of a window is responsible for gaps or water ingress, suitable external sealing can be renewed. If the window is leaking, the source should first be identified rather than simply applying additional sealant.
Will re-sealing my windows stop draughts?
It can if deteriorated seals or weatherstripping are causing the draught. If the window has dropped, the hinges are worn or the locking mechanism isn't pulling the sash firmly against the frame, those faults may need repairing instead or alongside re-sealing.
Can you re-seal uPVC, aluminium and wooden windows?
Yes. Window Doctor can re-seal suitable uPVC, aluminium and timber windows. The materials and repair method depend on the particular window system and whether the problem involves rubber gaskets, weatherstripping, perimeter sealant, glazing seals or traditional putty.
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- 1 Year Warranty on Labour
- 1 Year Warranty on Manufactured Parts
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