Rotten timber repair
Rotten sills, bottom rails and stile ends cut out and spliced in matching timber — the rest of your window stays original. From £80 + VAT per section.
Rot in a sash window is almost always local: the bottom rail, the sill, or the last few inches of the stiles where rain sits. We cut the decayed timber out, splice in new timber cut to the same profile, then prime and paint it. From £80 + VAT per section, and the original window stays.
How we repair rot
- Sound timber found either side of the decay and the rot cut back to it
- New section cut in matching timber and the moulding profiled to suit
- Spliced, glued and screwed so the joint is stronger than the original
- Filled, sanded, primed and painted to match
- Sills replaced in hardwood where the whole section has gone
Because rot varies so much, this is the one job we will not price over the phone without seeing photos. Send pictures on WhatsApp and we will give you a realistic range the same day.
Recent example: Faversham
A full refurbishment with double sill replacement. The sill and the bottom of the jambs had gone soft, so the rot was cut out, new hardwood sills were made and fitted, the jambs were spliced, and the whole window was primed and repainted. See the photos.
Frequently asked questions
How much does rotten timber repair cost?
From £80 + VAT per section repaired. Price depends on how much has to be cut out — a short splice in a sill is at the lower end, a full bottom rail and both stile ends is more. You get a fixed price after the survey.
Do I need a whole new window if the timber has rotted?
Almost never. Rot normally sits in the bottom rail, the sill or the bottom of the stiles, where water collects. That section is cut out and spliced with new timber while the rest of the window — which is usually sound — stays exactly as it is.
What timber do you use?
Seasoned hardwood for sills and exposed sections, matched softwood elsewhere, with the mouldings cut to match the existing profile so the repair disappears once painted.
Will the repair show?
No. The new timber is cut to the same profile, primed and painted with the rest of the window. Our Faversham sill job is a good example — the finished window looks original.
Can you repair rot on a listed building?
Yes. Splicing in matching timber is like-for-like repair, which is what conservation officers want to see. We work on grade II listed properties regularly.
Other sash window services
Timber repairs near you
Cut out, spliced, painted — a real repair in Faversham
