Endorsed by Which?

ZEN Windows & Conservatories

5.0

34 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

Why you can trust this trader

After undergoing rigorous assessment to become endorsed, every Which? Trusted Trader agrees to our Code of Conduct. This gives consumers the reassurance that they have the best possible protection and adds an extra layer of security to ensure best practices and procedures are followed. Which? fully investigates any breaches and will take any necessary action to ensure consumer protection.

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

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

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

5.0
34 reviews
Customer Service
5.0
Quality
5.0
Value
4.9
Sort by
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
Replacement windows and doors
Customer Service
Quality
Value
Replaced all windows and a french door. Zen fitted in the job early to enable me to have other booked work carried out. Paul (owner) kept in regular communication and was always extremely polite and helpful. The fitters arrived on time and were friendly, very helpful and courteous. Nothing was too much trouble and they helped replace curtains, blinds etc. I would highly recommend Zen. They’re lovely to deal with.
Customer in City of Bristol Posted on 14/03/2020 , work completed 07/03/2020
New windows and doors
Customer Service
Quality
Value
Paul and the team at Zen windows did a great good. We are very pleased with the windows / doors and the fitting. Great communication with Paul and tidy working which is always pleasure. The window and door quality they fit is excellent and I would not hesitate to recommend them. A good small business which take pride in their work and customers. Thanks for a great job.
Steve, Bath and North East Somerset Posted on 01/08/2019 , work completed 31/07/2019
First rate
Customer Service
Quality
Value
Five windows of different shapes and sizes fitted to 1930's semi. Great people, great job. Highly recommended.
John, Avon Posted on 03/10/2018 , work completed 03/10/2018
Excellent job
Customer Service
Quality
Value
Paul did an excellent job! He came out to quote quickly the price was extremely competitive. The lead time was short in my case. Zen fitted my windows beautifully and very fast. They also left my house very clean and tidy. Very highly recommended!
Samantha, Avon Posted on 01/06/2018 , work completed 01/06/2018
Superbly professional
Customer Service
Quality
Value
From my first phone call to the company they have been efficient and effective. They arrived on time, worked diligently and got the job done, not finishing until everything was complete and the area completely cleaned up and tidied away.
Susan, Avon Posted on 25/05/2018 , work completed 25/05/2018