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
Created with AI, based on recent reviews
What people talk about most
Reviews shaping this summary
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
Company replied
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
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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
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
A great experience from start to…
A great experience from start to finish.
I invited SJB Specialists to quote for three new sash windows in my lounge after my neighbour booked them for a job. I had already gained quotes from other companies but they were definitely the best: expert knowledge, professional, competitive on price and quick to respond to any questions.
They were also one of the few companies that bothered to visit my home before supplying a quote!
The installation went smoothly and the fitters left everything tidy, offering clear instructions on how to open and close my new accoya sash windows.
The room is noticeably warmer and the windows are of a high quality. Even a visiting plumber remarked on the good craftsmanship!
January 20, 2025
Unprompted review
Reply from Sjbsashwindows
Hi Kat,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Timber Sash Windows
I recently invited three timber sash window specialists to quote to install 8 new windows in my Victorian property. SJB stood out as being very knowledgeable, pleasant to deal with and their pricing was also very competitive. Terry (project manager) was always on hand and helpful throughout. The fitters were very friendly and pleasant to have around. They've done a great job and my wife and I are very happy with the windows so I wouldn't hesitate to use them again or recommend them to friends.
February 10, 2025
Reply from Sjbsashwindows
Hi Harry,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Excellent service from start to end
Really excellent service from start to finish. Gave us lots of different options for the work we needed done, everyone we interacted with as SJB were really communicative, friendly, and professional, and a fantastic finish to the work! Would highly recommend and will definitely use SJB again.
January 29, 2025
Unprompted review
Reply from Sjbsashwindows
Hi Tess,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Reply from Sjbsashwindows
Hi Tom,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Lovely looking product
Lovely looking product. Does the job too as the room is now warmer. Careful and friendly fitters.
January 20, 2025
Reply from Sjbsashwindows
Dear Patrick,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Unable to complete my installation
One of our window panes was scratched during re-installation in November 2024. The initial installation was undertaken in December 2023 but such was the poor quality of the work and following a report being undertaken by RISA (the surveying division of FENSA, SJB Windows eventually agreed to reinstall all 8 windows at my property. They initially agreed to replace the sealed unit that was scratched by their own contractors and site manager Terry, but its coming up to 3 months and they have made no attempt to complete the replacement and Stephen Boylan (MD?) is now denying all responsibility. I have had to put the shutters I ordered in to storage. Disappointing as my living room had no window coverings all over Christmas.
The window they re-installed to our rear dormer has leaked since SJB Installed it. They have tried to blame the condition of the roof but this has since been over-hauled and the leak continues from the window they have now installed twice. The lead work to the window from which there has never been an issue was patched up by SJB with mastic. They were sent a video of rainwater running directly through the leadwork where they had used mastic and completely denied responsibility. The decor in the room below has been ruined and they have refused to make good the damage and or cover the cost of redecoration. This is now being handled as a complaint by FENSA because SJB windows continue to deny liability. They are not the ones with water pouring into our bedroom every time it rains. Stephen Boylan way of dealing with a legitimate dispute is to post negative reviews about the company I work for. Search EPC Choice on Google to see this for yourself.
I have now been provided the results of the FENSA complaint which confirms that the works to the window to the rear dormer do not comply with Building Regulations. The scratched window does not comply with GGF Quality of Vision standards. SJB windows returned to site on the 8th April and refitted the rear dormer window for the third time. Their contractor was not instructed to replace the scratched window and I received an email from Stephen Boylan later that day stating that the window would only be replaced if I agreed to remove this review. He also very kindly offered not to take legal action against me. Its difficult to comprehend what legal action could be taken against me having paid in full £35,000 for windows that are still unsatisfactory 16 months after the original install.
I have been contact twice by Trust Pilot and provided them with detailed evidence of the issues I have had with SJB Windows.
November 21, 2024
Unprompted review
Reply from Sjbsashwindows
We would like to clarify several points raised in your review, as they do not accurately reflect the work carried out by SJB Sash Windows Specialist or the circumstances involved.
Firstly, the scratch to the outer pane of the bay window was reported to us 11 months after installation. At the time of installation in December 2023, there was no mention or record of any damage. Our warranty does not cover damage arising from external factors that occur post-installation — such as those caused by window cleaners, contractors, or general wear and tear. It is therefore not reasonable to hold SJB responsible for damage that occurred long after completion, and for which no evidence links it to our work. If we had been responsible, the presence of shutters would not prevent us from addressing the issue. We operate in an accordance with the glass & glazing federations quality of vision standards for all units.
Regarding the rear dormer window, this was not removed and reinstalled, as suggested. As a gesture of goodwill, we also removed and re-fitted the exterior timber liners after applying lead behind them to improve weatherproofing. No further works were carried out to this window.
We also hold photographic evidence from before the installation, clearly showing that the roof beneath the dormer and above the area of water ingress was in poor condition. While on-site, and again as a gesture of goodwill, our team replaced any visibly broken or displaced tiles they could safely access from the scaffolding — even though roof repair does not fall under our scope of work.
We do not accept liability for any subsequent water ingress, which is directly linked to the pre-existing and deteriorated lead work, as independently confirmed by both FENSA and RISA. Their inspection highlighted that the lead work needed to be replaced for the installation to be compliant with Building Regulations. They also confirmed that this situation presents a grey area in the industry: installations should pause when faulty lead is discovered, but it is not always safe or practical to leave a large opening in a property.
Upon identifying the issue, we removed the window to allow your own building contractor to carry out the necessary remedial works to lead. We then reinstalled the window on the same day. To be absolutely clear: the window itself was not the cause of the leak — the issue stemmed from the defective, pre-existing lead work around the dormer and faulty roof which has all been completely replaced by the client. Again, we have a photographic and video evidence.
At SJB Sash Windows Specialist, we are committed to following all industry regulations and welcome constructive, fair feedback. If any installation were to fall short of compliance, we take full responsibility to ensure corrective action is taken.
We also believe transparency is important for prospective clients reading this review. We encourage readers to look through this reviewer’s history of public feedback across other businesses, where a consistent pattern of one-star reviews and aggressive language is apparent. Unfortunately, we feel this review reflects ongoing frustration over unreasonable expectations rather than any failure on our part.
To note, the company who found the review useful is Agent Green which is owned by the client who has left this review!
Please also note that we are currently working with Trustpilot to have this review investigated and removed, as it does not accurately represent the standard of service we delivered, nor the professionalism with which we have attempted to resolve the situation.
Superb service- thank you so much for…
Superb service- thank you so much for your excellent work! Tom and Emily
January 15, 2025
Unprompted review
Reply from Sjbsashwindows
Dear Tomas,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Professional and friendly staff
December 16, 2024
Reply from Sjbsashwindows
Hi Murat,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Terrific products and team
December 20, 2024
Unprompted review
Reply from Sjbsashwindows
Hi Shari,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Pleased with the services received from…
Pleased with the services received from the team. We had our windows replaced with accoya sash windows at the front and uPVC at the back of the house. The team did a nice job and materials were high quality. They worked very efficiently and came back to do some touch ups as needed. Would recommend!
December 3, 2024
Reply from Sjbsashwindows
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Reply from Sjbsashwindows
Hi Naomi,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Replacement bay window
This is the third time we've used this company, and once again, they did an excellent job replacing our bay window. The team was polite, tidy, and incredibly skilled. They went above and beyond to be helpful throughout the process. Highly recommend!
November 12, 2024
Unprompted review
Reply from Sjbsashwindows
Hi Elliot,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
2 window replacements
Good communication and competitive pricing to replace two sash windows at the back of the house. Would happily recommend.
November 11, 2024
Reply from Sjbsashwindows
Hi Jodie,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Very professional
Very professional from first conversations to actual work and follow up to get FENSA certificate.
Our next windows works will be with SJB.
November 18, 2024
Unprompted review
Reply from Sjbsashwindows
Hi Franck,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
very professional team
An easy process, dealing with knowledgeable and professional people, from sales to installation.
November 6, 2024
Reply from Sjbsashwindows
Hi Ken,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
The team were professional and…
The team were professional and efficient, from initial consultation to installation. Very happy with our new windows!
October 1, 2024
Reply from Sjbsashwindows
Hi Sam,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
Reply from Sjbsashwindows
Hi Jonathan,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
The service delivered by SJB windows was outstanding overall was…
The service delivered overall was outstanding from beginning to end -the initial visit, the professionalism of the surveyor and the expertise of the 2 fitters Bobby and Constantin.
The product quality is excellent and the finished windows are of a very high standard.
I highly recommend SJB windows.
October 15, 2024
Reply from Sjbsashwindows
Hi Susan,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service. I will be sure to pass your comments onto Bobby and Constantin.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
SJB were helpful and attentive from…
SJB were helpful and attentive from quote to installation - we weren't sure what we were looking for, and the guidance we received was far better than any other providers. The quality of our windows is brilliant; we are very happy with the result.
September 30, 2024
Reply from Sjbsashwindows
Hi Hannah,
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
The SJB team were great
The SJB team were great start to finish. The products are great and they were very respectful of the house during instillation - making an effort to minimise dust etc. I love the finished article (both the accoya wood sash, and their pvc sash windows).
August 28, 2024
Reply from Sjbsashwindows
Thank you for your custom and hospitality once again. We really appreciate your feedback as this helps us improve our service.
We do strive for customer satisfaction, so this is great news that we have achieved this again.
From everyone at SJB we wish you all the best and please keep us in mind for future works for yourself, friends and family.
Kind Regards,
The SJB Team
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