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SashWise Limited

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SashWise Limited

West London's sash windows experts Based in Teddington/Twickenham, SashWise specialises in the repair, restoration and replacement of wooden sash windows.

For 10 years, Dan, the owner, and our highly skilled team of craftsmen have delivered exceptional levels of service at a competitive price. We only use the best quality materials and take extreme care in your home. The services we offer are:

Servicing and draft proofing helps you to save heat, eliminate drafts and improve sound-proofing, as well as ensure your windows open and close smoothly agai

n. Any rot found is also repaired on site. Full restoration guarantees your sash windows are returned to their former glory to maintain the architectural heritage of your home. Our extensive restoration services take place at our local workshop where we take the windows back to wood so that all rot is revealed and then repaired. Double glazed new hardwood sashes guarantee heat retention and reduced noise levels. We make new double-glazed hardwood timber sashes to fit within your original box sash frame – a more cost-effective option to replacing the whole of your sash window. We are skilled at replicating the exact style and detail of your existing sashes so that they maintain the traditional character of your home. Free survey and quotation:
We provide a free site survey and a quotation which is tailored to your individual needs. If you live in the boroughs of Richmond, Twickenham, Kingston, Chiswick, Ealing, Wandsworth or in any neighbouring areas – take the first step in discovering a quieter, warmer and more secure home through the restoration of your sash windows. Call us today on 0208 977 4627 to discuss your individual requirements.

21/08/2026

A recent project completed in East Molesey for a large mid-Victorian villa within a conservation area.

With the original character of the property needing to be retained, the replacement vertical sliding windows and fixed sidelights were carefully designed to closely replicate the existing windows.

We’re pleased to hear the customer was so happy with both the finished result and the service from the SashWise team.

If you’re considering replacing or restoring windows in a period property, get in touch to discuss your project.

10/08/2026

It's the little details that make all the difference.

This recent installation perfectly showcases how bespoke timber sash windows can combine traditional craftsmanship with modern practicality.

From the elegant brass recessed lift, to the classic sash fastener and carefully selected privacy glass for the bathroom, every feature has been chosen to suit the home while preserving its timeless character.

Beautifully crafted, made to measure, and built to last.

If you're considering new timber sash windows or restoring the character of your home, we'd love to help. Contact SashWise today to arrange your free, no-obligation consultation.

📍 SashWise | Specialists in bespoke timber sash windows across South West London and the surrounding areas.

22/07/2026

Why choose SashWise?

The details make all the difference.

At SashWise, every window and door is crafted with care, combining traditional joinery with modern performance to create products that are built to last.

✔ Family-run for over 20 years
✔ Individually designed for every home
✔ Proudly made in Britain
✔ Premium Accoya timber for exceptional durability
✔ Backed by our 10-year guarantee

Whether you're restoring a period property or enhancing your home's character, we're passionate about creating beautiful timber windows and doors that look as though they've always belonged.

📍 Serving homeowners across London and the surrounding areas.

10/07/2026

Before ➡️ After

A recent project showcasing just how much difference a well-crafted timber sash window can make.

From the initial structural opening to the final installation, every stage was completed with care and attention to detail, creating a timeless finish that feels perfectly at home.

Planning a home renovation? Speak to our team about bespoke timber windows tailored to your property.

07/07/2026

Another successful installation completed in Twickenham.

From the quality of our bespoke timber windows to the care taken during installation, every detail matters. We take great pride in delivering a service that homeowners can trust from start to finish.

Thank you to our customer for your wonderful feedback. Knowing you're delighted with your new windows means so much to the whole SashWise team.

Thinking about upgrading your windows? Get in touch to arrange your free, no-obligation quotation.

05/07/2026

A perfect finish is about more than just the window itself. It's about making sure every detail complements the character of the home.

For this project in Ealing, we carefully matched the stained finish to the existing timber, creating a seamless result that looks right at home.

Thank you, S, for your wonderful feedback. It was a pleasure working with you.

Thinking about new timber windows for your home? We'd love to help. Get in touch for a free, no-obligation quotation.

01/07/2026

A recent project with a feature you don't see every day.

As well as restoring the sash windows, this property still had its original internal timber shutters. Designed to tuck neatly into the window reveal, they're a beautiful reminder of the craftsmanship found in many period homes.

Preserving original features like these is an important part of what we do, helping homeowners improve the performance of their windows while retaining the character that makes their property unique.

Thinking about restoring your sash windows? Get in touch to see how we can help.

30/06/2026

Some of our favourite projects are the ones where we get invited back.

We first worked on this property in 2024, retrofitting the original sash windows to the front of the house. This year, we were delighted to return and install two brand new bespoke sash windows.

If you've never heard the term before, retrofitting simply means upgrading your existing timber sash windows rather than replacing them. Depending on the condition of the windows, this can include draught proofing, timber repairs, new cords and balances, and even slimline double glazing where suitable, all while preserving the original character of your home.

As a family-run business, building lasting relationships with our customers means just as much as producing beautiful windows. Knowing our clients trust us enough to return, and recommend us to others, is something we're incredibly proud of.

A huge thank you to JB for the wonderful review and for choosing SashWise once again. It really does mean a lot to our team.

If you're unsure whether your windows need restoring, retrofitting or replacing, we'd be happy to help. Get in touch for a free, no-obligation quotation.

24/06/2026

Crafted in Britain using premium Accoya timber, our bespoke windows and doors are built to stand the test of time while enhancing the character of your home.

As a local family-run business with over 20 years of experience, we take pride in combining traditional craftsmanship with exceptional materials to create beautiful, long-lasting results tailored to every property.

Looking to upgrade your windows or doors? Get in touch today to arrange your free, no-obligation quote.

16/06/2026

We're always grateful to receive feedback like this. Thank you for trusting us with your home and for taking the time to share your experience.

If you have a home improvement project in mind, get in touch to see how we can help. 🏡

Address

Unit 39, Railway Arches, Popes Grove
Twickenham
TW14JW

Opening Hours

Monday	8am - 5:30pm
Tuesday	8am - 5:30pm
Wednesday	8am - 5:30pm
Thursday	8am - 5:30pm
Friday	8am - 5:30pm

Website

http://www.sashwise.co.uk/

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