Sjbsashwindows (sjbsashwindows.co.uk) has a 4.8 out of 5 rating on OK.one, based on 60 user reviews collected here. It is listed under Construction & Manufacturing and its reputation is excellent. Praise is nearly unanimous, with 95% rating it 4 stars or higher; The business has replied to 100% of negative reviews; 48 of them were added in the last 12 months. Last updated 2026-08-10.
What people say
C
CJ · 39 reviews · Verified · Experienced 2026-01-28 ·
★★★★★
SJB replacement sash windows
Very impressed with this company, from start to finish the experience was easy , professional & excellent quality.
My project & installation team communicated regularly, the guys on site managing the sash replacements were friendly, considerate & delivered an impeccable finish.
Not a cheap product, but you get what you pay for & I am over the moon with my new windows. Would thoroughly recommend!
Reply from Sjbsashwindows2026-02-06
Dear CJ,
Thank you so much for taking the time to leave such a lovely review, we really appreciate it.
We’re delighted to hear that you had a smooth experience from start to finish and that the project and installation teams looked after you so well. It’s great to know the communication, on-site professionalism, and final finish all met your expectations.
We’re especially pleased that you’re over the moon with your new windows, that’s exactly what we aim for. Thank you again for choosing us and for your recommendation; it genuinely means a lot to the whole team.
All the best,
The SJB team.
R
Rosa Knight · 4 reviews · Experienced 2025-10-01 ·
★★★★★
Excellent experience from start to…
Excellent experience from start to finish. Blago in particular was amazing. He was professional, helpful, very tidy and always friendly and courteous.
Reply from Sjbsashwindows2026-02-02
Thank you so much for taking the time to leave this lovely review. We’re delighted to hear you had an excellent experience from start to finish. Blago will be especially pleased to hear your kind words — his professionalism, attention to detail, and friendly manner are things we really value. We truly appreciate your support and hope to work with you again in the future.
Excellent consultation and great customer service, all of which made the process of getting new windows installed incredibly easy.
Our bedroom is now much improved and much warmer than prior to installation.
Reply from Sjbsashwindows2026-01-28
Thank you so much for the kind review! We’re really glad to hear you had a great consultation experience and that the installation process felt easy from start to finish.
Even better to know your bedroom is now warmer and more comfortable—that’s exactly what we aim for.
Thanks again for choosing us, and don’t hesitate to reach out if we can help with anything in the future!
The SJB team
S
Sarah · 1 review · Verified · Experienced 2026-01-27 ·
★★★★★
The box window replacement was smoothly…
The box window replacement was smoothly managed, with minimum disruption /mess.
Reply from Sjbsashwindows2026-01-27
Thank you for taking the time to leave a review. We’re really pleased to hear the box window replacement was handled smoothly with minimal mess. It was a pleasure working for you.
All the best,
The SJB team.
Easy to ask and obtain information to make an informed decision. Purchase, delivery and installation was easy to organise. Happy with our windows.
Reply from Sjbsashwindows2026-01-12
Thank you so much for your kind review! We’re delighted to hear that you found the process easy from start to finish and that you’re happy with your new windows.
Helping our customers make informed decisions and enjoy a smooth experience is always our goal. If you need anything in the future, we’re here to help
S
Simon James · 4 reviews · Verified · Experienced 2026-01-05 ·
★★★★★
Professional
Good products, professionally managed process and installers. Would recommend
Reply from Sjbsashwindows2026-01-05
Thank you for your kind review! We’re glad you’re happy with the products and found our process and installers professional. We really appreciate the recommendation and your support.
S
Scott V · 28 reviews · Verified · Experienced 2025-12-09 ·
★★★★★
Very Professional
From initial visit, quotation and completion this was a very smooth job. It was unquestionably a difficult 4th floor window replacement and our installer, Constantine, was a multi-skilled professional who just got on with it, where others might have balked. Lovely windows as promised.
Reply from Sjbsashwindows2025-12-09
Dear Scott,
Thank you for taking the time to share your experience. We’re delighted to hear that the process, from quotation to installation, went so smoothly. Your project was indeed a complex one, and we’re proud that Constantin’s expertise and can-do approach helped ensure everything was completed to a high standard.
We’re equally pleased that the new windows have met your expectations. Your feedback means a great deal to us, and we appreciate the confidence you placed in our team.
The SJB team
Beautiful quality windows and door. Ordering process and pre-installation contact efficient and responsive. Installer very nice, polite and tidied up well. Only misses 5 stars because of untidy paint retouching (recommend asking SJB not to retouch edges of windows and just do these yourself with masking tape later).
Reply from Sjbsashwindows2025-12-05
Thank you so much for your thoughtful review and for choosing us for your windows and door installation. We’re delighted to hear that you were pleased with the product quality, ordering process, communication, and the professionalism of our installer.
We’re sorry to hear the paint retouching didn’t meet expectations. Your feedback is very helpful, and we’ll make sure it’s passed on to the team so we can improve this part of the process.
Thank you again for your honesty and for the 4-star rating, your insights help us get closer to 5 stars next time. If there’s anything else we can assist with, please don’t hesitate to get in touch.
The SJB team.
M
Ms Thomas · 24 reviews · Verified · Experienced 2025-11-24 ·
★★★★★
Good job done, thank you
Professional service and a polite operator who did a neat job and cleared up afterwards.
Reply from Sjbsashwindows2025-12-03
Thank you so much for your kind review!
We’re really glad to hear you were happy with the service. Our team takes pride in being both professional and tidy, so it’s great to know this came through. If you ever need anything in the future, we’ll be more than happy to help.
The SJB team.
Website, communications, site visit and getting a quotation was handled well. Competitive price quoted. Lower than competitor we'd shortlisted. Able to schedule a slot for installation more swiftly than expected. Work was carried out professionally and a high standard.
Reply from Sjbsashwindows2025-11-06
Dear Andrew,
Thank you so much for your kind feedback! We’re delighted to hear that you were pleased with our communication, pricing, and installation process. Our team always aims to deliver great value and high-quality workmanship, so it’s wonderful to know we met your expectations. We truly appreciate you choosing us and hope you enjoy the results for many years to come.
All the best,
The SJB team
c
customer · 3 reviews · Experienced 2025-10-27 ·
★★★★★
Josh was fantastic and the window was…
Josh was fantastic and the window was installed in a morning and looked great thank you
Reply from Sjbsashwindows2025-11-06
Thank you so much for your lovely feedback! We’re delighted to hear you’re happy with your new window. We’ll be sure to pass your kind words on to Josh — he’ll be thrilled to know you’re pleased with the result.
All the best,
The SJB team
The window installers were efficient, polite and took loads of care. They clearly loved installing the windows and were proud of how good it looks. As are we!
Reply from Sjbsashwindows2025-10-31
Dear Mark,
Thank you so much for your lovely feedback! We’re delighted to hear that our installers made such a positive impression and that you’re as pleased with the finished result as they were proud to deliver it. We’ll be sure to pass on your kind words to the team, they’ll be thrilled to know their care and craftsmanship were appreciated.
Wishing you many years of enjoyment with your new windows!
Warm regards,
The SJB Team
I had a great experience with SJB replacing wooden 3-bay sash windows. The whole process was efficient and professional from sales through to survey and installation. I found the team very helpful and pleasant to deal with (answering all my many questions with patience!). The installation went smoothly with very little mess and the windows look great.
Reply from Sjbsashwindows2025-10-24
Dear Nick
Thank you so much for your kind words and for taking the time to share your experience! We're delighted to hear that you’re pleased with your new sash windows and that the whole process, from sales to installation, met your expectations. Our team always strives to make every step as smooth and stress-free as possible, so it’s wonderful to know their efforts made a difference. We really appreciate your feedback and hope you enjoy your windows for many years to come!
All the best,
The SJB team.
We had PVC replacements of both sash and casement windows fitted. The fitters (Cydrell and Dominic) were extremely professional and worked rapidly finishing the whole house within a week. The disruption during fitting and retouch painting needed afterwards was much less than expected. The new windows look great!
Reply from Sjbsashwindows2025-10-21
Dear Fiona,
Thank you for taking the time to share your review.
We are delighted to hear the team did a great job and that you are happy with your new windows. We have passed your words over to the installers.
Once again, thank you so much for taking the time.
All the best,
The SJB team.
J
Jonathan · 2 reviews · Verified · Experienced 2025-10-13 ·
★★★★★
Thanks to CJ, Leroy and Blogi!
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 did their level best to proactively reassure me and to explain what they were doing. No detail was too small for them and they never made me feel that I was pestering them (even when I relayed on concerns from the block management). I was very grateful to them for working so hard to clean up the dusty mess afterwards.
All in all, this job went just about as smoothly as possible.
Reply from Sjbsashwindows2025-10-16
Dear Jonathan,
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.
I have passed your message onto the guys.
Thank you once again for your kind words and support.
The SJB team.
Best regards,
The SJB Windows Team
H
Henry Wilson · 51 reviews · Verified · Experienced 2025-10-06 ·
★★★★★
First rate service, great quality, good price
First rate service from this well-established family firm – from initial contact through to the final invoice. Very well-made windows, professionally installed. Competitively priced.
Reply from Sjbsashwindows2025-10-15
Hi Henry,
Thank you for taking the time to leave us a review and for your kind words about our team, the installation and the company as a whole. We're really pleased to hear you were happy with the whole process.
Best regards,
The SJB Windows Team
K
Kevin Smith · 1 review · Verified · Experienced 2025-09-30 ·
★★★★★
Good job overall
Overall the experience with SJB Windows was good with prompt email communications, helpful staff and a clean and efficient window installation. The only fly in the ointment was an unforeseen and fairly last minute change in the installation date which, fortunately, was ok.
Reply from Sjbsashwindows2025-10-13
Hi Kevin,
Thank you for taking the time to leave us a review and for your kind words about our team and the installation. We're really pleased to hear you were happy with the communication and the quality of the work.
We do apologise for the change in your installation date. Unfortunately, this was due to one of our installers being unexpectedly signed off for a period of time, which was out of our control. We did our very best to stick to the original schedule and were able to complete your installation just four days later.
We appreciate your understanding, and we're glad everything worked out smoothly in the end. If there's anything else you need, please don't hesitate to get in touch.
Best regards,
The SJB Windows Team
E
Emily Senn · 3 reviews · Experienced 2025-10-03 ·
★★★★★
Very professional from start to finish
Very professional from start to finish, friendly service, clear communication and excellent quality installation. I would definitely recommend!
Reply from Sjbsashwindows2025-10-09
Hi Emily,
Thank you so much for your lovely review! We're really glad to hear you were happy with the whole experience from the communication to the installation. It was a pleasure working with you, and we truly appreciate your recommendation and support.
All the best,
SJB Sash Windows
Incredibly knowledgable and did an amazing job replacing a window. We loved it so much we are having them back to replace more
Reply from Sjbsashwindows2025-10-06
Hi Martha,
Thank you so much for your kind words and for taking the time to leave a review! We're really glad to hear you're happy with the work, and we're looking forward to coming back to help with the next set of windows.
See you soon,
The SJB Sash Windows Team
Extremely polite and professional team of people. The man who came to look at the job gave me information and advice on all the options open to me. The quote, with said options, came through very quickly. I was given a date when the work was likely to begin and received frequent updates in the lead up to that date. The chap who came to fit the windows was polite and friendly, fitted the windows with care and attention and cleared up very well before he left.
Couldn’t ask for more and would definitely recommend.
Reply from Sjbsashwindows2025-10-01
Dear Ruth,
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.
Thank you once again for your kind words and support.
The SJB team
