Sash Window Repair & Restoration North London

Looking for expert sash window services in North London? At MJ Kloss Carpentry, we specialise in sash window repair, restoration, and bespoke timber sash windows tailored to period homes across the area.

Whether you’re in Islington, Camden, Hampstead, or Muswell Hill, our team combines traditional craftsmanship with modern techniques to restore your windows to their best.

Sash Window Repair North London

Over time, sash windows can suffer from rot, swelling, draughts, and general wear. Our sash window repair North London team can resolve all these issues while keeping the original character of your windows intact.

We replace broken cords, repair frames, fix rattles, and seal gaps to make your windows smooth, secure, and energy-efficient.

Sash Window Restoration London

Our sash window restoration service focuses on preserving original timber wherever possible.

We work with care to remove paint build-up, restore joints, replace damaged sections, and improve insulation, all without compromising the heritage look of your windows.

If you live in a listed building or conservation area, we understand the regulations and work to the highest standard.

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Wooden Sash Window Repairs

Bespoke Timber Sash Windows

If your windows are beyond repair or you’re working on a renovation, we offer bespoke sash windows made to match the style and period of your property.

Crafted from high-quality wood in our London joinery workshop, our wooden sash windows and timber sash windows are built to last and can be customised to suit any architectural detail.

Sash Window Refurbishment London

Splicing is a traditional carpentry technique used to replace sections of rotting or damaged wood without removing the entire frame. We carefully cut out the decayed area and join in a new piece of matching timber using strong, durable joints and modern adhesives.

This method preserves as much of the original woodwork as possible while restoring the strength and appearance of the sash window. It’s ideal for maintaining period features while extending the life of the window.

Why Choose MJ Kloss Carpentry?

We’ve been serving North London for over 30 years, working on homes in areas like Highgate, Stoke Newington, and Finchley. Whether you need a one-off sash window repair or are looking for the best sash window company in London to handle a full refurbishment, we offer reliable advice, fair pricing, and skilled workmanship.

We’re not a generic window installer. We’re a dedicated carpentry team that takes pride in detail, especially when working with traditional and wood sash windows. That’s why homeowners and property managers trust MJ Kloss for sash windows across North London.

wooden sash window repair
sash window replacement

Areas We Cover in North London

We work throughout the North London region, including:

  • Islington
  • Camden
  • Hampstead
  • Highbury
  • Archway
  • Tufnell Park
  • Muswell Hill
  • Stoke Newington
  • Finchley
  • Crouch End

Looking for sash windows in Chiswick or other parts of London? We also have teams covering West, East and South London.

North London Sash Window Repairs

Get a Free Quote

Need advice or want to book an inspection? Contact MJ Kloss Carpentry today for a free quote on sash window repair, refurbishment, or bespoke wooden sash windows in North London.

Our window joiners cover all areas of London and the surrounding areas.

Sash Window Repairs
South London

Sash Window Restoration
East London

Sash Window Replacement
West London

Sash Window Refurbishment
Central London

"I have used them for many different projects, some large some small. Whatever the job was it was done with a great level of professionalism and competence. I have recommended them to many friends and will continue to do so. Highly recommended, and you won’t be disappointed."

G.T.

“Brilliant and impeccable work, with attention to detail. The whole process was a joy and the carpenter did exactly what he said he would do. I would recommend and use them again on the next project."

N.C.

"Highly recommend, having done a number of jobs for me and always completing on schedule and in budget. There was good communication and the carpenter worked hard. I wouldn’t hesitate to recommend or hire them again."

S.B.

"We have been working with Maarten and his team for over a year now and his work has been varied, from rebuilding complicated oak windows to fine work on decorative lamps. They have been extremely skilled and artistic, able to advise on aesthetics and produce very detailed and intricate work. Highly recommended!"

J. & S.B.

"Very solution orientated and professional in doing my loft conversion, the final product looks amazing and nicely increased the value of my property. Great to find a reliable crew that I can use over and over again. Thanks for all the work done! "

A.S.

Give us a call

At MJ Kloss Carpentry & Joinery we are always available to answer any question or query about your home project, big or small. Our phone lines are open from 9:00am to 5:00pm weekdays. We hope to hear from you soon.

020 8945 3552

Tell us about your project

We want to know exactly what you need so we can review the best way to accomplish what you have envisioned. Send us your requirements and we will schedule in a visit to provide a professional personalised quote.
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