Endorsed by Which?

ZEN Windows & Conservatories

5.0

38 Reviews

Opening Hours
Today - 09:00–17:00
  • Monday 09:00–17:00
  • Tuesday 09:00–17:00
  • Wednesday 09:00–17:00
  • Thursday 09:00–17:00
  • Friday 09:00–17:00
  • Saturday 09:00–17:00
  • Sunday 10:00–15:00

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About

We specialise in replacement windows, doors and conservatories. All of our windows are A-rated as standard and our products covered by solid guarantees which are insurance backed. We are Certass registered and approved to carry out installations in accordance with current building regulations. We supply the superb Duraflex Diamond Suite PVCU system, and specify Ultraframe for all of our conservatory roofs; both of which are second to none in terms of quality and durability.

What we do

  • Double glazing

    • Double glazing installation
    • Double glazing suppliers
    • Double glazing repairs
  • Conservatories

  • Glaziers

    • Replacement window services and repairs
    • Window consultants
    • Double glazed units
    • Double glazing installation
    • Double glazing repair
    • Sash windows
    • UPVC Windows
  • More Services

    • window installation
    • window installers
    • window company

Customer reviews

Why you can trust these reviews

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100% of the reviews we publish have been through our stringent moderation process.

5.0
38 reviews
Customer Service
5.0
Quality
5.0
Value
4.9
Sort by
Quality work & outstanding craftsmanship
Customer Service
Quality
Value
Zen Windows & Conservatories replaced a wooden-framed conservatory, sash bay windows and front door. The entire experience, from start to finish, was exemplary, from Ben visiting the house to explain Zen's products and process and provide a quote, right through to the installation team. Our conservatory is a non-standard shape, and I gather it was quite a challenge to fit. However, Andy & Archie did a beautiful job of installing the new one, going above & beyond to ensure everything was done properly, finishing it off to a very high standard. We had a Warmer Roof installation, which is already significantly better than the old plastic roof. The plasterer & electrician were also both great. Everyone involved was respectful of our home and left it tidy each day throughout the works. The finished conservatory looks amazing and more like an extension. We could not be more pleased with it. We also had replacement sash bay windows. Again, this wasn't a straightforward job, with not a single straight wall in the house. However, Andy & Archie did a lovely job. Finally, the front door was replaced with a stunning composite door. It all looks absolutely fantastic and is finished off beautifully, both internally and externally. We've had so many comments about how lovely the house looks! Overall, the project was a great experience, and I wholeheartedly recommend this company. They were so good that I've just had Ben back to quote for replacing our remaining sash windows!
Customer in Bristol City Posted on 03/10/2025 , work completed 05/09/2025
Replacement Bathroom Window
Customer Service
Quality
Value
Zen Windows replaced a window in our bathroom. From the first visit for a quotation to the final completion of the work everyone we dealt with was professional, helpful and a pleasure to deal with. Stacey, in the office called to keep us up to date with progress and called after completion to check that we were happy with the results. The quality of the window is excellent. This is the fourth time we have had work done by Zen and I would highly recommend them.
Customer in Bristol City Posted on 24/08/2025 , work completed 08/08/2025
Excellent work
Can not fault this company quick efficient service all staff polite good work done quickly and site left tidy would highly recommend will go back when we need more windows etc fitted
Customer in Bristol City Posted on 08/08/2025 (Reviewer did not use service)
Outstanding Service and Craftsmanship from Zen Windows – Highly Recommended
Customer Service
Quality
Value
We used Zen Windows in Bristol to replace our old, broken wooden sash windows and had a brilliant experience from start to finish. Ben, the General Manager, was excellent – clear, helpful, and never pushy. He priced the job fairly and explained everything in a professional and approachable way, giving us total confidence in the service. Matt, who handled the scheduling, was also fantastic – always quick to respond, clear in his communication, and helpful throughout. The whole process felt smooth and well-managed. The fitters – Mitch, Dan, and Kieran – were outstanding. They were polite, friendly, tidy, and extremely skilled. The job involved fitting a large number of sash windows, many of them irregular and tricky to install, but the team worked with great care and precision. The finishing was just as impressive – from the bath stone patching to the interior carpentry, including window surrounds and architraves, everything was done to a very high standard. Their attention to detail and pride in their work really showed. We’re absolutely thrilled with the end result – the windows look fantastic and have transformed our home. Zen Windows were a pleasure to deal with at every stage, and we would highly recommend them to anyone looking for quality windows and outstanding service.
Customer in Bristol City Posted on 05/08/2025 , work completed 31/05/2025
Sturdy, elegant, well fitted windows
Customer Service
Quality
Value
Zen had previously installed a conservatory for us, with good aftercare. This time, they installed six windows (including two bay windows), with acoustic glass. They were incredibly helpful in arranging an advanced date that fitted in with our complicated family arrangements and completed the work quickly. The guys were prompt, very helpful, hard working, tidy, and clean. They carefully discussed the work with me as they went along and were willing to make some adjustments to the way they were fitted. This resulted in me being delighted with the appearance of the windows, the way they were installed and their acoustic quality.
Customer in Bristol City Posted on 11/07/2025 , work completed 10/07/2025
Zen Windows - top service for fitting new windows
Customer Service
Quality
Value
I had high hopes of Zen Window, an established and local family run business, having been recommended them by a friend. But they more than exceeded my expectations. The helpful, professional and personal service was exceptional from the first point of contact until the completion of the installation of 4 high spec quality windows in two rooms. The fitters were diligent throughout the two days it took to complete the job, and left the window surrounds in a spotless condition with no need for any reparation work. In addition they arranged the installation and, with no delays, the removal of the scaffolding. Massive thanks from a delighted customer!
Customer in Bristol City Posted on 28/05/2025 , work completed 07/03/2025
Conservatory and windows
Customer Service
Quality
Value
This is the second time we have engaged Zen to undertake work for us, again they were very professional throughout the entire process. This time Zen replaced the house guttering, facia boards and soffits front and back and four rear windows, conservatory windows, doors and roof. The build was finished in good time and to the highest standards. Andy and Archie were on site for nearly four weeks and were unfailingly courteous, helpful and their workmanship was first class. We are really pleased with the results and highly recommend Zen Windows.
Customer in South Gloucestershire Posted on 10/05/2025 , work completed 09/05/2025
An excellent installation
Customer Service
Quality
Value
We asked Zen Windows to quote for replacement double glazed windows mainly due to the many good reviews we read here and our own experience reflected this. The quotation process was straightforward, the format of each window finely detailed and the contract clearly laid out. Our nitpicky queries were patiently dealt with. From the quotation visit to completion of the work, everyone arrived when they said they would, with regular updates on progress. We are very pleased with the quality of the installation and the windows themselves and the house was always left clean and tidy. Zen don’t have a showroom so we were very dependent on the information they provided verbally and online which isn’t something I would choose to do, I didn’t ask if there were any opportunities to view their work. My only concern related to making payment. Zen prefer payment by bank transfer and although payment can be made by credit card, payment of anything other than the deposit incurs a charge (clearly shown in the contact). I would prefer a more secure way to make the final payment
Customer in South Gloucestershire Posted on 28/08/2024 , work completed 16/08/2024
Great installation, even better support
Customer Service
Quality
Value
Zen fitted our windows in February 2021, they were great. Polite, professional and had great communication from start to finish. The price was very competitive for good quality. They arrived when they said they would and completed on time, leaving the place tidy when finished. But the real plus was in the support after the installation. We only had a small issue with one of the windows not opening. But when the manufacturer was going to make us wait for 5 weeks for the repair, Paul came quickly and was able to identify and sort the issue within 1 hour. I highly recommend Zen windows, they are very easy to work with and, as I have found, very reliable and trustworthy.
Customer in Bristol City Posted on 10/08/2022 , work completed 01/03/2021
Replacement of french door window pane
Customer Service
Quality
Value
Paul did a fantastic job replacing the broken window. He replied promptly to the quote request and came out to look over what needed to be done prior to doing the work. The new window looks great and Paul took away all the waste material and left the area of work very clean.
Customer in South Gloucestershire Posted on 28/03/2021 , work completed 06/02/2021