Timber Sash Window Repairs, Restoration & Installation in London Clapham


If you live in the Clapham SW4 area and are looking for an experienced company to repair, refurbish or replace your existing sash windows, contact Novells today.

With many years’ experience, we can help with all common faults including draughts, broken sash cords, rotten wood and more, breathing new life into your existing sash windows.

For a fast, local response, get in touch with us today on 020 8395 1916 or fill out the form to make an appointment and one of our team will call back at a time that suits you.

Common Problems with Sash Windows

We’ve repaired countless sash windows over the years in properties of all sizes across Clapham, some of the most common problems we come across include:

  • Damaged timber
  • Damaged or worn sash cords Warped window frames
  • Rattling windows
  • Loose or damaged joints
  • Water ingress
  • Sticking
  • Draughts coming through the windows

Sash Window Repair and Refurbishment Service

If your sash windows have become worn or damaged, they could be putting your home at risk of leaks, draughts and even a break in.

Our specialist 18-step refurbishment process covers every element of sash windows including fitting our brush-pile system to restore them to good working order, with our guarantee that your window will be weatherproof, leakproof and draught-proof.

We can work on all types of property including listed buildings and provide free estimates for all window repair and refurbishment work across Clapham; whether you live in Old Town, Oaklands, Larkhall or around the common.

For more information, or to request a free estimate, give one of our friendly team a call on 020 8395 1916 or fill out our call back request form.

Both Phil and Peter were professional, punctual, honest and courteous. Very happy with the work completed - attention to detail was superb. Left the rooms worked on spotless and now much warmer, quieter and no drafts.

Read More Verified 5 Star Reviews on Checkatrade

Sash Window Replacement

In addition to our sash window repair service, we can also provide completely new installations. Whether you are looking to replace your existing windows or have new ones fitted. We offer a wide range of choices and styles to suit you, whether you prefer a modern or classic look.

We provide an end to end service, meaning you’ll only be dealing with one contractor throughout the whole process and will be safe in the knowledge that we are fully insured and highly rated.

Why Choose Novells?

  • Our sash windows are all made in England.
  • All of our windows are built using grade A, sustainable timber.
  • All new box sash windows meet current UK building regulations.
  • We can supply windows made from a range of materials including Treated Softwood, Hardwood or Accoya.
  • We are registered with FENSA.
  • We offer an insurance backed guarantee with the glass and glazing federation insurance scheme.
  • We are an independent family run firm.
  • We offer free estimates for all jobs.

Sash Window FAQs

Can You Fix Sash Cords?

Yes, we are regularly called out to fix sash cords that are worn or snapped. These cords are an essential part of the design of the window, however, they do wear down over time.

How Much Will the Sash Window Repair Cost?

The cost of repairing or refurbishment a sash window is largely dependant on several factors such as the age, accessibility, style and current condition. At Novells, we provide free estimates before every job to ensure that there are no surprises when you are billed.

Can You Repair Old Sash Windows?

Yes, we are experienced in repairing and refurbishing all types of sash window and regularly work on period and listed buildings, we can repair your sash window to ‘good as new’ condition whilst respecting period detailing.

Sash Repair Specialists Clapham

Are you in need of a sash repair specialist in the Clapham area? Get your free estimate today, call 020 8395 1916 or fill out the form to request a call back from one of our experienced team.

Request a Call Back

Double glazed sashes fitted to existing box frames



Traditional Period Timber Front Doors In Clapham

Designed to your requirements complete with frame we specialise in the following architectural eras:

Early Georgian, Late Georgian, Regency, Victorian, Edwardian and 1920's / 1930's

"Hi Phil Just wanted to drop you an email to say how amazing the windows look. We are utterly thrilled with them and make the house look totally different. John was punctual and tidy and it was a pleasure to have him here." Annie

"I would like to thank you and especially John for his quality of work and attention to details. The work was done without any disturbance to our life despite the cold (November). I can only praise John's attitude to his work, attention to details and tidiness at the end of each day. I shall recommend your work to any body and if you require references in the area, please do not hesitate." Mrs Winter

"I can't believe I lived for 10 years with a set of sash windows that were either inoperable, draughty or difficult and risky to open and close - when it took Novells only a couple of days to restore all of them to the point where they silently glide like new. I cannot recommend Novells highly enough. I'd originally asked Philip, the owner of the company, to replace a broken cord in one of the windows and to leave it at that. I thought it would be way too expensive to restore the full set of seven Victorian sash windows in my flat. Not true. Getting my windows restored and draft proofed is the best value investment I have made in my flat. Novells are friendly, professional and top quality at a very fair price. I wish I'd come across Novells 10 years ago." Alan

"Thanks again for doing a brilliant job on the windows, they've turned out better than we ever expected. Please feel free to send prospective clients looking for a reference our way" Colm

"Many thanks for doing a fantastic job on our bathroom windows, I'm absolutely delighted with the work. Thanks also for being so professional – it's always a worry letting someone into your home when you have to go out for the day but we could trust you completely. Thanks again for a great job, I'm sure we will be contacting you again" Dave

Sash Window Repairs Clapham
Double Glazed Box Sash Clapham
FENSA Sash Clapham