Putty Glass Replacements
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Traditional putty glazing remains a feature of many older timber windows and doors, where glazing putty is used to bed and secure the glass within the frame. Over time, exposure to sunlight, rain and changing temperatures can cause the putty to dry out, shrink, crack or begin pulling away from the glass.
Window Doctor provides professional putty glass repairs and replacements through our nationwide network of local branches, working with traditional putty-glazed windows and doors in residential and commercial properties.
Our experienced glaziers can remove deteriorated putty, replace damaged glass where necessary and reglaze suitable existing frames using the appropriate glazing method. Wherever practical, we’ll retain serviceable frames and replace only the glass and glazing materials that actually require attention.
Available 24/7 for any emergency, call us today on 0800 043 0095 for a free quote and have your putty glass windows replaced by the best!

From £45
Common Reasons To Repair or Replace Putty Glass:
Glazing putty is exposed to the elements throughout its life and will naturally deteriorate over time. As it loses flexibility and adhesion, gaps and cracks can develop around the glass.
Common putty glazing problems include:
- Dry or brittle glazing putty – older putty can gradually harden and lose its original condition.
- Cracked putty – cracks can develop as the material ages and is exposed to changing weather conditions.
- Shrinking putty – deterioration can cause putty to pull away from the glass or frame.
- Flaking or crumbling putty – badly deteriorated material can begin breaking away in sections.
- Loose or defective putty – failed glazing material may no longer properly secure or seal the edge of the glass.
- Poorly cured putty – problems during an earlier installation can affect the finish and longevity of the glazing.
- Movement within the glazing – deterioration of the surrounding putty can affect how securely the glass is held.
- Cracked or shattered glass – damaged panes may require removal and reglazing with new glass and putty.
- Burglary or accidental damage – impacts and forced entry can damage both the glass and surrounding putty.
- General deterioration – older traditional glazing may require refurbishment even where the surrounding frame remains serviceable.
Deteriorated putty shouldn’t automatically mean replacing the complete window. If the surrounding frame remains in suitable condition, the affected glazing can often be carefully removed, repaired and reglazed while retaining the existing window or door.
Our Putty Glass Replacements & Repair Services:
Window Doctor provides putty glazing repairs and replacements for suitable traditional windows and doors, including residential and commercial properties.
Our services can include:
Putty glass replacement
Traditional putty glazing repairs
Removal of old and deteriorated glazing putty
Replacement of cracked or shattered glass
Reglazing existing window and door frames
Replacement of loose or damaged panes
Re-puttying around existing suitable glass
Resealing putty-glazed windows and doors
Single glass replacement
Replacement following accidental or burglary damage
If the putty around your windows or doors has become cracked, brittle, loose or started falling away, or the glass itself has been damaged, contact Window Doctor. Through our nationwide network of local branches, an experienced glazier can assess the existing frame and glazing, recommend the appropriate repair and provide a free, no-obligation quote.
Frequently Asked Questions - FAQs
What is glazing putty?
Glazing putty is a traditional material used to bed, secure and seal glass within suitable window and door frames. It is particularly associated with traditional timber windows and older glazing systems.
Can old cracked window putty be replaced?
Yes. Deteriorated, cracked or loose putty can often be carefully removed and replaced, provided the surrounding glass and frame remain suitable. If the glass is also damaged, this can be replaced as part of the reglazing work.
Does cracked putty mean I need a new window?
Not necessarily. If the frame and glass remain in serviceable condition, deterioration of the glazing putty alone may be repairable. Window Doctor can assess the complete installation before recommending replacement of anything more substantial.
Can you replace broken glass in old timber windows?
Yes. Window Doctor can replace suitable broken or cracked glass in many traditional timber windows while retaining the existing frame. The condition of the timber and the glazing method will need to be assessed first.
Do you provide putty glazing for commercial properties?
Yes. Through our nationwide network of local branches, Window Doctor provides suitable putty glass repairs and replacements for both residential and commercial properties.
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