Sash Window Experts – Supply, Fit & Repairs for Over 25 Years
Kelly’s Sash Windows is a trusted, family‑run business serving London, Berkshire, and the South East.
We specialise in double‑glazed timber sash windows, expert repairs,
and bespoke installations – all with high‑quality craftsmanship, friendly service, and competitive prices.
From period property restorations to modern upgrades, we supply, fit, and repair traditional timber sash windows
across London and the South East. Our expert team blends time‑honoured craftsmanship with modern double‑glazing technology,
delivering windows that enhance your home’s charm, improve comfort, and increase energy efficiency — all at competitive prices.
Proven reputation across London & the South East
High‑quality work without inflated costs
Made‑to‑measure for every property
Customer‑first service from enquiry to installation
⭐⭐⭐⭐⭐ Our Customers Love Us
“Kellys Sash Windows have now either repaired or replaced all of our sash windows in our Grade II listed property.
We have been really impressed by their expertise and knowledge. Bob knows sash windows and is a specialist in his trade.
I trust the work he has done for us completely. I would certainly recommend this company to my friends.”– Cynthia Smith
Great job, windows look amazing.
ItaJuly 30, 2025
We had our original sash windows double glazed by Kellys Sash Windows, and we’re really pleased with the outcome. Bob is both knowledgeable and very... read more
Lindsay BlamiresJuly 6, 2025
Kellys Sash Windows have now either repaired or replaced all of our sash windows in our Grade II listed property. We have been really... read more
Cynthia SmithJuly 6, 2025
Bob came and replaced our old and dilapidated sash windows. For most of them he was able to keep the boxes and just replace the... read more
Nic BevanJuly 6, 2025
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We install and repair Sash Windows
Frequently Asked Questions
Are sash windows worth it?
Yes – they combine timeless style with modern performance. Our timber sash windows feature high‑quality Red Grandis wood and double glazing for lasting beauty, security, and efficiency.
How long do they last?
With proper maintenance, our sash windows can last decades – many well over 50 years – thanks to expert craftsmanship and durable materials.
What’s the cost?
Most installations range between £500 and £1,000 per window, depending on size, design, and specifications. We provide free, no‑obligation quotes.
Can you match my existing windows?
Yes – every window is custom‑built to match your property’s style, whether it’s a listed building, period home, or modern build.
Do you offer repairs?
Absolutely – from broken sash cords to rotten frames, we restore sash windows to full working order while retaining their original charm.
Why Choose Kelly’s Sash Windows?
Whether you’re looking for flush casement windows, slim frames, or new timber sash windows, Kelly’s Sash Windows is your go‑to for
premium wooden and timber window solutions. With decades of experience, we specialise in bespoke wooden double‑glazing, tailored to your needs.
Our skilled craftsmen work with Red Grandis timber, renowned for its strength, durability, and elegance.
- Superior Quality – We’re committed to excellence in every product we make, combining traditional techniques with innovative window solutions.
From repairs to complete replacements, our attention to detail and customer care make us the top choice for wooden sash and flush windows. - Reliable & Professional – We pride ourselves on dependable, punctual service. Every window is crafted with precision and expertise,
giving you complete peace of mind. - Bespoke Solutions – No two homes are alike, so we create windows to your exact requirements.
Whether you need a replacement flush casement window or a timber sash window repair, we’ll deliver a solution that fits perfectly. - Affordable Prices – We provide premium products at competitive rates, ensuring every installation meets industry standards without exceeding your budget.
Sash Window Repairs / Sash Window Restoration
If your wooden sash windows need repair, look no further than us. Our technicians have the experience and expertise to help you restore your windows to their original condition. We understand the importance of having fully functioning sash windows, so we ensure our repairs are done quickly and professionally.
Whether there’s a problem with draughty frames or faulty window locks, we can provide an effective and affordable solution. Contact us today to learn more about our wood sash window repair services.
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