Old - Single glazed wood sash windows x 8 New - Double glazed upvc wood grain sash windows x 8 SJB Windows were BRILLIANT! Quote - good value, precise and beat numerous other FENSA compa... See more
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Review summary
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I was very impressed with SJB throughout - from the first visit to the installation itself, everyone we dealt with was professional, helpful and really efficient. The fitting was extremely smooth and... See more
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The windows are beautiful and look really great installed. The entire process from measuring/ordering/fitting was incredibly smooth and the fitter was a total craftsmen leaving a very professional fi... See more
Company replied
The three guys (CJ, Leroy and Blogi) were all really conscientious and hard-working professionals. I had 10 windows replaced and they clearly realised that it was a big and stressful deal for me - so... See more
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Company details
Information provided by various external sources
We’re a family-run business specialising in both manufacturing and installation of traditional sash windows. Although we mainly install our sash windows in London & the south-east of England, our sash window services reputation is known much further afield.
Contact info
United Kingdom
- sjbsashwindows.co.uk
4.8
Excellent
329 reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 100% of negative reviews
Typically replies within 1 week
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The guys were great
The guys were great, they did a great job. Competitive price & great service.
July 24, 2025
Unprompted review
Reply from Sjbsashwindows
Dear Steve,
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and our products.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
Sash window refurbishment
The sash window refurbishment was carried out efficiently and at the end of each day, the rooms were left clean and tidy.
The fitters were a pleasure to have in the house.
July 13, 2025
Reply from Sjbsashwindows
Mr Wastnage,
Thank you so much for your kind feedback.
I'm really pleased to hear that you were happy with the sash window refurbishment and that our team made a positive impression. We always aim to work efficiently and leave everything clean and tidy, so it's great to know that came across.
I'll be sure to pass your comments on to the fitters, they’ll be delighted to hear it!
Great quality product and service.
Good communication throughout the process, reliable trustworthy workmen, great quality product, a reasonable price. I would highly recommend them.
July 17, 2025
Reply from Sjbsashwindows
Dear Mrs. Healy,
Thank you so much for your kind words. We're delighted to hear that you were happy with our communication, the quality of our work, and the product itself. It means a lot to us that you found our team reliable and trustworthy, and we truly appreciate your recommendation.
If there's anything you need in the future, please don’t hesitate to get in touch.
Really professional and doing a great…
Really professional. They did a great work
July 9, 2025
Unprompted review
Reply from Sjbsashwindows
Hi Sara,
Thank you so much for your kind words and positive review, we really appreciate it!
It was a pleasure working with you, and we're so glad to hear you were happy with the results. If you ever need anything in the future, don’t hesitate to get in touch.
Have used SJB again and again
I have over the past 3 years had installers from SJB in to stagger installation of new double glazed sash windows in my flat. Every time I’ve had different installers and they’ve all been fantastic. Really polite, fast work but really good quality.
June 17, 2025
Reply from Sjbsashwindows
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and our products.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
Very trustworthy company.
I’ve used this company for all my windows and highly recommend. The staff are friendly yet professional. They leave the property clean and ensure the work is completed to the highest standards.
June 2, 2025
Reply from Sjbsashwindows
Dear Helen,
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and our products.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
Impressed and Delighted
The windows are beautiful and look really great installed. The entire process from measuring/ordering/fitting was incredibly smooth and the fitter was a total craftsmen leaving a very professional finish as well as meticulously cleaning and tidying up after. I was very impressed, the new windows look great. I went for PVC sash on a bay window. They look beautiful from the street and the inside trim being wood, really elevates it.
June 2, 2025
Unprompted review
Reply from Sjbsashwindows
Dear Lizzie,
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and our products.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
Really good customer service from start…
Really good customer service from start to finish. Would definately recommend and use this company.
May 27, 2025
Reply from Sjbsashwindows
Dear Lea,
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and our products.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
A great company to work with.
Very efficient, reliable, communicative and an excellent standard of workmanship. We are are very pleased with our new sash windows. Thank you.
May 23, 2025
Reply from Sjbsashwindows
Dear Giles,
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and our products. We have passed your comments onto the installers.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
SJB windows was a 100% professional…
SJB windows was a 100% professional company from the very start and I would highly recommend their service to anyone looking for a window company. Every step was carried out seamlessly, the day of the timber sash window installation went completely according to plan with a super installer called Constantin!
I am a very satisfied client and I wouldn't hesitate in using them again in the future!
May 9, 2025
Reply from Sjbsashwindows
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and our products. We have passed your comments onto the installers.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
Beautiful windows
Beautiful windows. Service excellent from the start to finish and the fitters were really helpful and professional.
One thought which may help - despite doing all they could possibly do it does create dust. We are glad we split the project into two halves - I think having whole house done at once could be a bit much!
May 12, 2025
Reply from Sjbsashwindows
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and our products. We have passed your comments onto the installers.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
Wooden sash window replacement for entire home
SJB did a lovely job replacing most of the wooden sash windows in our home. The quoting and contracting process was smooth, professional and transparent, the operatives on site were tidy and pleasant in going about their work, and they finished on time. Most importantly, the windows look great.
April 15, 2025
Reply from Sjbsashwindows
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and our products. We have passed your comments onto the installers.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
Excellent reliable company
Excellent company, very reliable. I have used them on several occasions over the years.
On this occasion I had a door and 2 sash windows installed.
From the first visit they explained everything clearly and gave me an idea of how long it would take for the door and windows to arrive and be installed.
I know I can rely on the company to come when they say they will and to inform me in advance if any date needs to change. Minimum stress!
Everyone who came for the survey/measurements/installation was very pleasant, efficient and polite.
April 10, 2025
Unprompted review
Reply from Sjbsashwindows
Dear Hilary,
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and our products.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
The workmanship was exceptional
The window replacement was excellent. Rob was polite, on time and the window looks absolutely stunning! He answered all our questions and cleaned up the room thoroughly afterwards. Great work!
March 25, 2025
Reply from Sjbsashwindows
Thank you so much for your kind words! We're thrilled to hear that you're happy with the window replacement and the service provided by Rob. He will be delighted to know that his work and professionalism made such a positive impression. We always strive for the highest standards, and it's wonderful to know that everything, from the installation to the clean-up, met your expectations.
Thank you again for choosing SJB Sash Windows Specialist — we truly appreciate your feedback and look forward to working with you again in the future!
Excellent overall, but check the Terms and Conditions
SJB Sash Windows recently completed a double glazing project at our 5 bedroom terraced house in South-East London. The work was done in four phases, and apart from a few small windows, the house is now completely double glazed. With one exception, the whole project has been excellent. It was clear from the first sales visit that this is a company that knows about double glazing. Each of the four installations was very professional. There was a minimum of disruption and we are very happy with our new Accoya windows. The quality is very high.
The one exception I mentioned above occurred at the very start. When I read the Terms and Conditions, they said that if we paid late SJB would "... charge you interest ... at the rate of 5% accruing on a daily basis...". This seemed unclear so I questioned it. I was told, in writing, that this meant "5% daily on any outstanding sum until payment is made". In other words, any debt would double after twenty days (more if it's compound interest). That seemed to me to be draconian.
I discussed this at length with SJB, who seemed adamant. The question for me was not about the risk that we might end up paying excessive interest. We always pay on time. The question was whether a company that charges interest at this rate could be trusted. I decided to persist and wrote to SJB saying "We seem to have arrived at an impasse. It would be great if you could suggest a way through."
The next day a new set of Terms and Conditions arrived which said "[interest at an annual rate of] 8% above the Bank of England base rate".
That is perfectly sensible. Apart from a couple of minor glitches everything after that went very smoothly.
Overall Summary: Excellent, but make sure you are happy with the Terms and Conditions
January 20, 2025
Reply from Sjbsashwindows
Thank you for your detailed and constructive feedback. We’re delighted to hear that you’re pleased with the overall outcome of your double glazing project and the quality of your new Accoya windows. Our team takes great pride in delivering a professional service, and we’re glad to know you experienced minimal disruption throughout the process.
We sincerely apologise for the confusion surrounding our Terms and Conditions, and we appreciate you bringing it to our attention. We take all feedback seriously and understand how important clarity is, especially regarding financial matters. We’re pleased that we were able to resolve the issue to your satisfaction.
Thank you once again for your understanding and for allowing us the opportunity to address your concerns. We greatly appreciate your trust in our team and look forward to working with you again in the future.
A really great product fitted quickly…
A really great product fitted quickly and professionally by very helpful installers. Nothing went wrong! Unbelievable in these days of total inefficiency.
I would highly recommend sjb.
March 31, 2025
Reply from Sjbsashwindows
Dear Paul,
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our product and our service
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
Excellent
Excellent, friendly and professional service from start to finish. Our replacement sash windows look great and were installed quickly and tidily by skilled fitters. I would highly recommend SJB.
March 17, 2025
Reply from Sjbsashwindows
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and our products.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
I have used SJB Windows before and each…
I have used SJB Windows before and each time they attend the initial meetings promptly to take measurements and then provide a timetable and quote for the work which they keep to. Their fitters are polite and keep the disruption to a minimum and start and finish on time. The after service is also good. They provide a totally professional service and I highly recommend them.
February 24, 2025
Reply from Sjbsashwindows
Dear Michael,
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our service and products.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
Really great team
Really great team - worked to a tight deadline and were helpful throughout the process. Thanks so much!
March 13, 2025
Reply from Sjbsashwindows
Dear Alice,
Thank you for taking the time to share your feedback about your experience with us. Your review means a lot to us, and we're thrilled to hear that you were satisfied with our services/products.
We are constantly striving to improve, and your insights help us continue to provide the best possible experience for our customers. If you have any further comments or suggestions, please don’t hesitate to reach out to us.
Thank you once again for your kind words and support.
The SJB team.
Brilliant from SJB!
Fantastic service from SJB and the team from start to finish. Big thanks to Paul, Glen, Kevin and the Milani brothers for their help to achieve an incredibly smooth process. The Milani brothers did such a great job fitting the windows. They were super efficient and tidy and the finish is incredible. Both the timber and uPVC windows look stunning and high end. Would definitely recommend SJB for anyone looking for new windows!
February 10, 2025
Reply from Sjbsashwindows
Thank you so much for your wonderful review! We're thrilled to hear that you had such a positive experience with SJB and the entire team. Paul, Glen, Kevin, and the Milani brothers will be delighted to know their efforts made a difference in delivering a smooth process and exceptional results. It's great to hear that you're happy with both the timber and uPVC windows – we always strive for top quality. Your recommendation means a lot to us, and we truly appreciate your kind words. Thank you again for choosing SJB, and we’re always here for any future window needs!
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