Endorsed by Which?

Advanced Glazing Systems Ltd

4.9

369 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 08:00–17:00
  • Saturday - Closed
  • Sunday - Closed

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.

Organisations and Awards

Sep 2019

About

AGS is a family run business specialising in all areas of UPVC and Aluminium Home Improvements.

We are much more than the average double glazing Company and we are confident that you will notice a real difference between AGS and our competitors.

We let our products speak for themselves and our friendly professional staff are more concerned with you receiving the best possible customer service and a high quality product that is right for your home.

AGS are registered with Fensa, The Glazing Ombudsman and the Glass and Glazing Federation, for complete peace of mind that you are dealing with a Company that has your interests at heart.

AGS supply and fit the following product range:

UPVC WINDOWS & DOORS - ENERGY RATED 'A'
ALUMINIUM WINDOWS & DOORS - ENERGY RATED 'A'
UPVC SLIDING SASH WINDOWS - ENERGY RATED 'A'
COMPOSITE DOORS
CONSERVATORIES
BIFOLD AND SLIDING DOORS

To discuss our product range and services further please feel free to contact us.

Andy Barnett

What we do

  • Double glazing

    • Double glazing installation
    • Double glazing repairs
    • Double glazing suppliers
  • Glaziers

    • Double glazing installation
    • Double glazing repair
    • Sash windows
    • Stained glass
    • Replacement window services and repairs
    • Aluminium Windows
    • Double glazed units
    • Triple Glazing
    • UPVC Windows
    • Window consultants
  • Conservatories

    • Conservatory repairs
    • Conservatory maintenance
    • Conservatory Roof replacement
    • Sun Lounge
  • Doors

    • Bi-fold doors
    • Composite doors
    • Front door
    • French doors
    • Patio doors
    • ​Aluminium doors
    • Orangeries
    • UPVC doors
  • Roofers

    • Guttering, fascias and soffits
    • Conservatory roof conversions
    • Tiled conservatory roofs
  • More Services

    • facias

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.

4.9
369 reviews
Customer Service
5.0
Quality
4.9
Value
4.8
Sort by
Fab job
Customer Service
Quality
Value
Very professional, tidy, polite and an excellent job done.
Which? Trusted Traders Consumer Posted on 23/09/2017 , work completed 23/09/2017
Brilliant job
Customer Service
Quality
Value
Fab, friendly company, great service, communication through-out and very efficient. Great product and even fitted through a blizzard!
Which? Trusted Traders Consumer Posted on 01/03/2018 , work completed 01/03/2018
Well fitted front door
Customer Service
Quality
Value
Very pleased with the service provided by AGS, they were punctual, polite and we're delighted with our new front door. The finish being excellent.
Which? Trusted Traders Consumer Posted on 28/09/2018 , work completed 28/09/2018
Full window replacement
Customer Service
Quality
Value
Informative, helpful workforce worked thro' really bad weather & completed on time. All questions answered & any concerns (few) dealt with. Office support good & follow up paperwork provided on time. Happy to use again 7 recommend.
John, Brentwood Posted on 09/10/2019 , work completed 26/09/2019
Good work tidy and friendly
Customer Service
Quality
Value
Very pleased with both the window and doors, work done in good time, making good done very well on old brickwork outside,very neat job left site very clean and tidy.
Customer in Greater London Posted on 26/05/2020 , work completed 26/05/2020
The trader replied (on 28/01/2021)
Thank you so much for taking the time to leave such a lovely review. It really is much appreciated and we are so glad you are happy with our service. Best wishes Advanced Glazing Systems
Front door installation
Customer Service
Quality
Value
Very pleasant and professional company to deal with from the ordering process choosing the door right through to installation of the door.
Customer in Thurrock Posted on 23/02/2021 , work completed 10/02/2021
The trader replied (on 29/04/2021)
Thank you for your kind review.
My Review
Customer Service
Quality
Value
Professional job
Martin, Essex Posted on 23/02/2015 , work completed 23/02/2015
Excellent
Customer Service
Quality
Value
Very helpful in the planning stages; the work was carried out efficiently, to cost and to a high standard. Recommended
Howard, London Posted on 30/11/2016 , work completed 30/11/2016
Job well done
Customer Service
Quality
Value
Very pleased with my new kitchen windows and stable back door. 2nd time I have used this company. Professional workman.
Which? Trusted Traders Consumer Posted on 10/06/2016 , work completed 10/06/2016
My review
Customer Service
Quality
Value
Time of visiting my house to windows & doors being fitted was 10 days. So happy. Thank you.
Margaret, Essex Posted on 07/03/2017 , work completed 07/03/2017
Brilliant job!!
Customer Service
Quality
Value
Brilliant professional job, really pleased. Would highly recommend!
Which? Trusted Traders Consumer Posted on 31/05/2018 , work completed 31/05/2018
Brilliant job
Customer Service
Quality
Value
From first visit to job completed, the company was professional and attentive. Had seen their work at a neighbours who fully recommended them as I do too.
Susan, London Posted on 24/07/2018 , work completed 24/07/2018
Excellent workmanship and customer service from AGS (new windows in a ground floor flat)
Customer Service
Quality
Value
AGS were excellent from start to finish. My partner and I decided we needed to replace all of the windows (4 windows and a large 3 section bay window) in our flat due to the poor heat and noise insulation. I spoke to John over the phone on a number of occasions and his knowledge and expertise were fantastic. The quote was somewhat pricier than some other like-for-like quotes I had gathered, but with such a large bay window I wanted to ensure the work would be carried out to a very high standard. John answered all of my queries and made me feel confident that AGS were the right people for the job. The installation was completed in a single day, and after completion, it's apparent that you get what you pay for. My partner and I are extremely happy with the quality of the windows and the attention to detail in the finishing that the installers had. We had one minor hiccup where the glass for our bathroom wasn't frosted as requested when the survey was carried out, but this was addressed and sorted immediately by John and Julie. After the new glass had been ordered an installer returned to the property in 2 weeks and fitted it in about 10 minutes. Everyone that I communicated with - John, Peter, Julie, Simone and Ella - were very friendly, polite and professional; providing a fantastic level of customer service that you hope for when spending quite a significant amount of money on a fairly large home improvement. I would highly recommend Advanced Glazing Systems.
Customer in Greater London Posted on 08/04/2022 , work completed 21/03/2022
The trader replied (on 13/06/2023)
Thank you for your kind review
Personal service
Customer Service
Quality
Value
Very prompt & thorough service. Accommodating to all request, big or small. Always available at the end of the phone. Highly satisfied with the work
David, London Posted on 12/01/2015 , work completed 12/01/2015
Very helpful in getting a difficult job done.
Customer Service
Quality
Value
They successfully obtained planning permission for replacement UPVC windows for several flat owners, worked with us & co-ordinated successful installation. The previous contractor has been unable to obtain planning permission. Advanced Gazling Systems went to lots of trouble in helping us.
C, Avon Posted on 30/11/2015 , work completed 30/11/2015
Excellent service from start to finish
Customer Service
Quality
Value
We’d been looking for a really classy looking front door for our house. The team at AGS really listened to what we wanted and showed us a number of different options while explaining the pros and cons of each type of door. They talked us through the whole process and kept us informed of all the details and when we should expect installation. The installation was excellent with the installer really taking his time to make sure that all the locking mechanisms were smooth and easy for us to use. All in all a great service and experience and we would fully recommend them to anyone thinking about using them.
Customer in Greater London Posted on 18/06/2024 , work completed 17/06/2024
The trader replied (on 24/06/2024)
Thank you for your kind review
Prompt, professional, great job
Customer Service
Quality
Value
Turned up on time to install French doors very good job. Tidy, professional. All round brilliant.
Which? Trusted Traders Consumer Posted on 14/03/2016 , work completed 14/03/2016
Professional job
Customer Service
Quality
Value
Good, realistic approach to the quotation process from Andy - no sugar-coating of potential issues. Installation team went about their work in a professional manner.
Andrew, Essex Posted on 19/09/2017 , work completed 19/09/2017
Great job, very pleased
Customer Service
Quality
Value
Always on time and very professional. Great job.
Which? Trusted Traders Consumer Posted on 17/03/2015 , work completed 17/03/2015
Reliable & professional
Customer Service
Quality
Value
Everything from the initial quotation meeting through to completion of work was professional. Calls/emails were responded to promptly, workmen were reliable and courteous. This was a recommendation and I would not hesitate to recommend to a friend.
Julia, Essex Posted on 15/04/2016 , work completed 15/04/2016
Excellent
Customer Service
Quality
Value
Excellent and very prompt service from sales visits. Technical visit and installation. A stunning look, quality product well fitted.
Linda, Essex Posted on 27/10/2016 , work completed 27/10/2016
My review
Customer Service
Quality
Value
Very professional.
Which? Trusted Traders Consumer Posted on 22/02/2018 , work completed 22/02/2018
Excellent Service
Customer Service
Quality
Value
Installed 9 UPVc windows and doors. They were clean and tidy, good timekeeping and I would highly recommend.
J Higgins Posted on 13/10/2019 , work completed 13/10/2019
Excellent After Sales Service
Customer Service
Quality
Value
Even though we had our windows fitted over 3 years ago we had a problem with smears appearing inside a couple of sealed glazed units. No problem, AGS replaced them! Excellent service.
Customer in Essex Posted on 20/03/2021 , work completed 03/03/2021
The trader replied (on 29/04/2021)
Thank you for your kind review.
Design and Installation of new Front Door
Customer Service
Quality
Value
From the very first contact with AGS to the installation the level of service has been outstanding. I don't like recommending companies to people usually through fear of others not having the same experience and it then reflecting badly on me but I have no concerns of that with AGS. I'm so pleased with their service and products I will be using them for the bi folds and roof lights on my proposed extension. It's the attention to detail and anything to help attitude that makes the real difference, backed up with great products. Really impressed.
Customer in Essex Posted on 06/02/2024 , work completed 05/02/2024
The trader replied (on 13/02/2024)
Thank you for your review