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Trusted Traders

Welsh Window Systems

Profile thumb welsh window logo


193 Reviews

Opening Hours
Today - 08:00–17:00
  • Monday 08:00–17:00
  • Tuesday 08:00–17:00
  • Wednesday 08:00–17:00
  • Thursday 08:00–17:00
  • Friday 08:00–16:00
  • Saturday 09:00–12:00
  • Sunday - Closed


Welsh Window Systems was formed in 1987.
We are a small family business with eight employees.
We are now in our 32nd year and our installation and customer care standards are the highest within our industry.
We supply, repair and install all Pvcu, Aluminium and Timber windows and doors.
We are specialists in Aluminium BI-Folding doors.
We service both commercial and domestic customers and tackle any job from a broken handle to a full installation of windows and doors.
We have a specialist repair side and service many commercial and domestic installations.
Recent repairs include changing hundreds of friction hinges to multi high rise offices.
Some of our customers include The Royal Mint, Arup, The M.O.D
Cardiff Wales Airport, Bristol Airport, Home Office and Mrs Jones
We treat all customers with total respect,courtesy, honesty and integrity.
We are an Ethical company and have also have installed running water into 84 homes and helped thousands of children in Sri Lanka after the terrible Tsunami.

What we do

  • Glaziers

    • Double glazing installation
    • Double glazing repair
    • Glass boarding up and replacement
    • Replacement window services and repairs
    • Sash windows
    • Aluminium Windows
    • Velux windows
    • UPVC Windows
    • Double glazed units
  • Doors

    • Bi-fold doors
    • Patio doors
    • Fire doors
    • ​Aluminium doors
    • Composite doors
    • Door repairs
    • Front door
    • French doors
    • Timber doors
    • UPVC doors
  • Locksmiths

    • Emergency locksmith service
  • More Services

    • aluminum stacking
    • specialist locksmith
    • windows

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.

193 reviews
Customer Service
Sort by
Replace existing glass roof with composite tiled and insulated roof
Customer Service
Cavan and Nathan run a very tight ship, from the scaffolders, fitters, electrician, plasterer and delivery of timber roof structure and upvc, right through to completion. The boys are prompt, courteous and experts in their fields. Each stage was co-ordinated to ensure the smooth running of the jobs to be completed ie: Roof and walls prepared...electrician arrived, electrics completed, plasterer arrived and everyone observed Covid regulations at all times. Cavan is extremely knowledgeable in his field and gave us excellent advice throughout. The boys work in harmony and cleaned up every night in preparation for the next day. There were no hidden costs or glitches and the roof has transformed our home - not only does it look amazing but has warmed up the house and created an all year round. living space. Thank you Cavan, Nathan, Jacob and Andrew.
Customer in Vale of Glamorgan Posted on 04/01/2021 , work completed 07/12/2020
Conservatory roof replacement
Customer Service
This is the second time I have used Welsh Windows. Last year I had some bedroom windows replaced. They did such a great job, I had them here again to replace my polycarbonate conservatory roof. They have done a brilliant job! The roof is now a solid tiled one with glass panels down each side. The difference inside and out is superb. It is now, not a conservatory, but an extension to our home. The ceiling is plastered and has lights inset and also around the edge in the soffit detail around the top of the windows. Which is lovely. As usual the guys were great, especially with the Covid issue etc. Cleaning up after themselves and I have no qualms about recommending Welsh Windows. I will certainly be using them again in the future to replace other windows too. The price was very fair, and they always go the extra mile to make sure everything is completed to the best of their ability, like for instance, adding insulation where none was present in the existing structure. Nothing is too much trouble. Which is very reassuring indeed.
Customer in Bro Morgannwg Posted on 21/12/2020 , work completed 18/12/2020
Beautiful windows and french windows installed with great care and minimum fuss.
Customer Service
I had a few quotes for replacing three windows and a set of french doors in my barn conversion. Cavan was not the cheapest quote, but he went the extra mile in attending the home and explaining the type of windows he recommended and was totally upfront about the difficulties the firm was having sourcing their windows due to Covid19. As soon as the windows were available an appointment was made to fit them. The receptionist on the phone was very friendly. The fitter, Nathan I believe, was cheerful and friendly and protected everything with sheets and cleaned up afterwards. The windows look great and work really well and I am so pleased with them. Nathan demonstrated the clever mechanism which makes cleaning the windows upstairs possible. Great company, great windows, great workmanship. Well done!
Customer in Vale of Glamorgan Posted on 17/12/2020 , work completed 16/12/2020
Good company, Well recommended
Customer Service
Thoroughly good company, good customer service, competitive quote. This is the second time I have used this company, they turned up on time, completed the job with minimum fuss and cleaned as they worked, showed me how to use the mechanisms and added a final clean before they went. Excellent workmanship. Well done Nathan, Jacob, Kieran and Andrew and of course Cavan and Gaynor.
Customer in Bro Morgannwg Posted on 17/11/2020 , work completed 16/11/2020
The trader replied (on 18/11/2020)
What a lovely detailed review.....almost with a full team in there! Thankyou very much for taking the time the leave the review. I've passed on you're feedback to all the above. Really pleased you've been happy with our work once again. Thanks again
Excellent service
Customer Service
Prompt, courteous and expert service from Cavan, and at a reasonable cost. I would certainly use Welsh Window systems again
Customer in Vale of Glamorgan Posted on 11/11/2020 , work completed 11/11/2020
The trader replied (on 18/11/2020)
Thankyou very much for taking the time to provide feedback. Hope to see you again in the future
Excellent Time Keeping
Customer Service
Very punctual, very professional in the way they and very pleased with the outcome of the work. They were also very clean and tidy and cleared up after finishing the work.
Derek, Cardiff Posted on 17/09/2020 , work completed 01/09/2020
The trader replied (on 23/09/2020)
Thankyou Derek for leaving us feedback. I'm glad you're pleased with all aspects of the work from start to finish. Thankyou
Fabulous job
Customer Service
I have used Welsh Window Systems in the past and not been disappointed. Today, Nathan and Jacob arrived on time to fit my new tilt and turn window which features an internal blind. They were done in a morning and left the place shipshape when finished. The new window was installed in my study and they covered my computer/printers/scanners to protect from dust. To say I’m delighted with the job is an understatement - it is fabulous. Cavan Sullivan your boys did you proud. Thanks so much.
Customer in Vale of Glamorgan Posted on 16/09/2020 , work completed 16/09/2020
The trader replied (on 18/11/2020)
Thankyou so much for leaving a detailed review for us. I've passed on your feedback to both Nathan and Jacob. The internal blinds are a popular choice nowadays. Thankyou again for taking the time to leave feedback
Did exactly what they promised when they promised. Result!
Customer Service
Andrew and Jacob fitted a new downstairs window for me. The time from ordering to fitting was about five weeks as advised which was much quicker than some of the other quotes I had and was very pleased with the finished result. The were very friendly, worked efficiently and went the extra mile making sure the window was gleaming when they finished and even cleaning the window next to it which looked filthy in comparison. Great customer service and they seemed to be experienced and hard working. Would definitely use them again, not the cheapest quote I had but far from the most expensive but they were able to do the job relatively quickly and made everything straightforward.
Janice in Cardiff Posted on 01/09/2020 , work completed 26/08/2020
The trader replied (on 23/09/2020)
Thankyou very much for taking the time to leave us such a detailed review Janice! I've passed your feedback on to both Andrew and Jacob :) . We pride ourselves on the high standard of work and I am very glad you're pleased with the whole experience, we always try to go the extra mile where possible. We may not be the cheapest, but as you said we are far from the most expensive - we refuse to use any products that aren't up to our high standard expectations and this obviously comes with a cost. Thankyou again for your feedback :)
Excellent work
Customer Service
Andrew and Jacob finished fitting the last of 3 windows for me today. They were prompt, efficient, very polite and tidied up afterwards. I am really pleased with the windows and would recommend Welsh Windows. I will definitely use them again.
Customer in Cardiff Posted on 27/08/2020 , work completed 25/08/2020
The trader replied (on 23/09/2020)
Thankyou for taking the time to leave us a review. Our fitters will always ensure they do not leave any evidence of them being in your home apart from great work :) . I've passed on your feedback to both Andrew and Jacob.
Customer Service
The two fitters, Andrea nd Jacob were so clean, the way they worked, it was fantastic to have them around. The quality of the the windows is excellent.
Mary & Frank, Barry Island Posted on 03/08/2020 , work completed 31/07/2020
The trader replied (on 05/08/2020)
Thankyou very much Mary and Frank for your feedback - I've just screenshot and sent to Andrew and Jacob so they can see. We're glad you are pleased with the windows and appreciate you taking the time to leave a review :)