WHAT CAUSES TIMBER ROT IN SASH WINDOWS?
Timber rot is usually caused by prolonged exposure to moisture and lack of maintenance.
Common causes include:
Failed paint systems
Water ingress around joints
Trapped moisture in sills and rails
Poor previous repairs
General age and weathering
If left untreated, rot can spread and weaken the structure of the window.
SIGNS YOUR SASH WINDOWS HAVE ROT
Soft or crumbling timber
Flaking or bubbling paint
Darkened or damp patches
Loose joints or movement
Gaps forming in the frame or sash
Early intervention can prevent more extensive damage and reduce repair costs.
HOW WE REPAIR ROTTEN SASH WINDOWS
We use a combination of traditional joinery and modern repair techniques:
Timber Splicing
Decayed timber is cut out and replaced with new, matching timber, maintaining strength and original profiles.
Resin Repairs
In suitable areas, we use specialist repair resins to rebuild and stabilise timber.
Reprofiling & Detailing
We carefully restore mouldings and details to match the original window.
Preparation for Finishing
All repairs are properly prepared, primed, and ready for painting.
REPAIR VS REPLACEMENT — WHAT’S BEST?
In many cases, repairing timber sash windows is:
More cost-effective
Better for listed buildings
More sustainable
Better at retaining original character
We’ll always advise honestly if replacement is the better option — but most windows can be successfully repaired.
IDEAL FOR PERIOD & LISTED BUILDINGS
We regularly carry out timber sash window repairs on listed buildings across Somerset, where retaining original fabric is essential.
Our work respects:
Original materials
Traditional construction
Conservation requirements
OFTEN COMBINED WITH OTHER REPAIRS
Timber repairs are often part of a wider overhaul, including:
Sash cord replacement
Draught proofing
Full sash windows overhaul
COST OF TIMBER SASH WINDOW REPAIRS
Costs vary depending on the extent of decay and the level of repair required.
We provide clear, fixed quotes following a survey, ensuring the correct level of restoration is carried out.
AREAS WE COVER
We carry out sash window draught proofing across Somerset, including Wells, Glastonbury, Frome, Castle Cary, Shepton Mallet, Street, Somerton and surrounding areas.
FAQ
Can rotten sash windows be repaired?
Yes — in most cases, rotten timber can be removed and replaced using splicing techniques, restoring strength and appearance.
How long do timber repairs last?
When carried out properly and maintained, timber repairs can last many years.
Is it cheaper to repair or replace sash windows?
Repairs are often significantly more cost-effective, especially for period properties.
Will repairs be visible?
No — repairs are carefully matched and finished to blend seamlessly with the original window.
If your sash windows are showing signs of rot or damage, we can help.
Contact Artisawn today for timber sash window repairs in Somerset.
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