Frank Kent Sash Restorer

Sash window services in Dorset

We repair and restore original timber sash windows, and timber casements too. Every job starts with a free visit and a fixed-price quote.

  • Restored sash window seen from inside, in its panelled reveal

    Full sash window restoration

    A complete overhaul for windows that need it.

  • Sash window being repaired in place, with tools on the cill

    Sash window repair

    Smaller jobs to get a window working properly again, such as freeing a sticking sash, replacing a broken cord, stopping rattles or repairing a damaged section, without the cost of a full restoration.

  • New timber spliced into the foot of a rotten door frame, above a new hardwood threshold

    Wood rot repair and timber splicing

    Rotten timber is cut out and new wood is spliced in. We can use durable hardwoods such as iroko and salvaged slow grown pine for listed buildings.

  • New cill going in, with the rot cut out of the window frame

    Cill repair and replacement

    Rotten cills are repaired with spliced-in hardwood or, where they are too far gone, replaced in durable iroko.

  • New sash cord being tied to an antique lead weight

    Sash cord replacement

    Broken or worn cords are replaced with waxed cotton sash cord with a nylon core for strength. The weights are checked and adjusted if needed so each sash glides smoothly and stays where you put it.

  • Draught proofing

    The staff and parting beads are replaced with brush-seal beads and a draught strip is fitted.

  • Parting and staff bead replacement

    Windows that are painted shut, stiff or loose are eased and adjusted.

  • New linseed oil putty going in around the original glass, with a putty knife beside it

    New glass and putty repairs

    Broken panes replaced and putty repaired using linseed oil putty.

  • Arched sash finished in grey

    Paint stripping and repainting

    Old and cracked paint stripped back where needed, then primer, oil-based undercoat and oil-based topcoat for a durable finish.

  • Brass sash fastener on a restored sash

    Lock and fittings repairs

    Existing locks and fittings are kept and reused where possible.

  • Hinged timber casement window restored, in a dormer

    Casement window repair

    Timber casement windows get the same repair-first approach: rot repairs, easing and adjusting, new glass and putty, and repainting.

How we work

  1. Get in touch by phone or email with a few photos of your windows.
  2. Visit and assessment. We look at the windows and talk through what they need.
  3. Written quote. A clear, fixed price for the work set out, valid for 28 days.
  4. Booking. Larger jobs are secured with a deposit (usually 20%) paid before the work, so we can order materials. Small jobs don’t need a deposit.
  5. The work. Done on site, or sashes are taken to the workshop with the openings safely secured while they’re away.
  6. Finish. Windows checked for smooth running, site left clean and tidy. The balance is due on completion.

Frequently asked questions

Is it worth restoring my windows rather than replacing them?

Usually, yes. Original timber is often better quality than modern softwood, and a restored window can last for decades. It also keeps the character of the house and is often required for listed buildings.

Is the price fixed?

Yes. The quote is a fixed price for the work set out, so it won’t go up if the job takes longer. The only exception is hidden rot that can’t be seen until the window is opened up. If we find any, we’ll stop, show you, and price the extra work before doing anything.

Do you work on listed buildings?

Yes, it’s our specialism. We repair and replace with like-for-like materials. Any alterations that need consent will have to be applied for, and we can help with information for your application.

How long will my windows be out?

Most work is done on site. If sashes go to the workshop, we’ll agree how long beforehand, and the openings will be securely boarded.

Is lead paint a problem?

Older windows often have lead paint, so we assume they do and work in a way that keeps dust to a minimum. We also use extraction equipment rated for lead-based paint when removing old paint.

How much does it cost?

Every job is different, so we offer a free visit and a fixed-price quote.