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
Fitting New Front Door
Customer Service
Quality
Value
I was very pleased with the tradesman named Steve from AGS who fitted my new front door, he did an excellent job!
Customer in Essex Posted on 25/01/2022 , work completed 19/01/2022
The trader replied (on 13/06/2023)
Thank you for your kind review
Bay Windows Front Door
Customer Service
Quality
Value
New Bay windows and Endurance Front door fitted by AGS. The fitters have been amazing, they were very helpful in selecting and recommending ideas. The surveyor was brilliant, worked everything out perfectly. Could not find a fault if I tried. Everything finished to a high standard. They have totally transformed the House . Flush sash windows in white woodgrain with Heritage sills. Definitely worth the extra money, they look like the original windows that would have been fitted when house was built. If everyone had these done the road would look fantastic. So pleased am getting rest of house done. Well done AGS.
Dean in Greater London Posted on 20/01/2022 , work completed 12/01/2022
The trader replied (on 24/01/2022)
Thank you for your review.
Highly recommended
Customer Service
Quality
Value
Used Advanced Glazing for roof light and kitchen window replacement. Andy and his team were top notch from start to finish. We have used them twice now and also recommended them to friends and family. Always on time, great attention to detail and superb finish. We are chuffed to bits and would not hesitate to recommend.
Customer in Essex Posted on 15/10/2021 , work completed 08/10/2021
The trader replied (on 24/01/2022)
Thank you for your review.
Great quality
Customer Service
Quality
Value
We are delighted with the quality of our completed conservatory. The fitters and builders were always on time, flexible and professional throughout.
Customer in Greater London Posted on 24/07/2021 , work completed 09/07/2021
The trader replied (on 04/10/2021)
Thank you for your kind review.
Excellent service once again
Customer Service
Quality
Value
Installation of a new rear window and door. This was the third time we have used this company and, as on previous occasions, their products and workmanship are first class.
Customer in Greater London Posted on 21/07/2021 , work completed 06/07/2021
The trader replied (on 04/10/2021)
Thank you for your kind review
Professional service from start to finish
Customer Service
Quality
Value
This is the second time we have used this company as we had such a positive experience before. We had new windows installed to back of the house. All questions were answered, nothing was too much trouble. The windows were installed promptly and professionally and our property was left clean and tidy. So pleased with the quality of the new windows and the look. We would definitely recommend this company 100%.
Marie in Greater London Posted on 19/07/2021 , work completed 22/06/2021
The trader replied (on 04/10/2021)
Thank you for your kind review
Excellent work and service
Customer Service
Quality
Value
This is the third time I have used this company and as usual the work was carried out in an efficient and competent manner from my first enquiry regarding the job and the completion. The company is a family run business and all members are pleasant and helpful from the office staff to the actual installers.
Jean in Greater London Posted on 17/07/2021 , work completed 09/07/2021
The trader replied (on 04/10/2021)
Thank you for your kind review
Excellent service from a very professional company.
Customer Service
Quality
Value
AGS replaced my windows and doors. The fitters were punctual, completed the work to a high standard left having tidied up afterward. Pleased with the product and service. There were a couple of small issues, which they returned to fix without any fuss. Very impressed with AGS and have already recommended them to a friend and would use them again.
Mark in Essex Posted on 07/06/2021 , work completed 23/04/2021
The trader replied (on 04/10/2021)
Thank you for your kind review
Professional and efficient
Customer Service
Quality
Value
Professional, efficient and impressive from the initial visit, through the survey and the completion of the work which was undertaken cheerfully without any fuss. AGS were recommended to us and we would be happy to endorse this to future customers.
Customer in Greater London Posted on 20/05/2021 , work completed 14/04/2021
The trader replied (on 04/10/2021)
Thank you for your kind review
New Porch, Front Door & Monocouche Render
Customer Service
Quality
Value
Absolutely amazing. Has completed changed the front of our house from half ugly old render, old flat roof porch falling apart and old sliding glass door and wooden 2nd door. House now looks beautiful in chalk white render, chartwell green front door, pitched roof porch. We already had the windows and back bifold done 6 months prior by Andy and his AGS team. They were best price and done the best work then. So asked if they done porches/render as well as front door after some disappointingly high quotes elsewhere from more builder based companies. Yet again AGS come out best on price, Andy as detailed as ever, his building team done an amazing job, worked so hard and in 8 solid work days changed the front of our house into something looking brand new. Outstanding. Having never liked quotes and work being done but have been absolutely chuffed to bits we found AGS. They should really call themselves advanced fanatical home improvements as so much more than glazing.
Cliff in Essex Posted on 18/05/2021 , work completed 28/04/2021
The trader replied (on 20/05/2021)
Thank you for your kind review.
Excellent Job From Start To Finish
Customer Service
Quality
Value
We have used AGS a few times before and didn't regret using them again to complete the rest of the house. They did an excellent job, four large windows, one a bay, and a front door. The whole process from first call to completion was great.
Clifford in Greater London Posted on 13/05/2021 , work completed 27/04/2021
The trader replied (on 14/05/2021)
Thank you for your kind review.
Professional job from start to finish
Customer Service
Quality
Value
I am very satisfied with the work done by AGS. From the initial phone call to the after work service, I have been communicated with professionally, the work has been done to a high standard, receipt and after service documents provided swiftly. I've got no complaints at all and would not hesitate to recommend AGS for any window replacement work.
Customer in Greater London Posted on 30/04/2021 , work completed 19/04/2021
The trader replied (on 14/05/2021)
Thank you for your kind review.
Top class double glazing!
Customer Service
Quality
Value
I used Advanced Glazing Systems to supply and fit a double glazed side door. They were professional from start to finish and did a fantastic job, and very reasonably priced. Having used another local company on previous occasions I wished I had know about AGS before as they were far more trustworthy, helpful and knowledgeable! I would certainly recommend them!
Customer in Essex Posted on 28/03/2021 , work completed 29/01/2021
The trader replied (on 29/04/2021)
Thank you for your kind review.
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.
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.
Professional and efficient
Customer Service
Quality
Value
I have used them on a couple of occasions before for whole house double glazing. They were by far cheaper than the multinationals and a better product. Also gave a 10-year guarantee. We had this house double glazed including bi-folding doors in 2013. Our neighbour was looking for a cheap supplier but was so impressed with the work being done on ours she had her whole house done too by AGS. We needed a garage side door replacing from wood. Should have done it in 2013! Still the same efficient family-run company. Would thoroughly recommend.
Customer in Kent Posted on 10/12/2020 , work completed 19/11/2020
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
Replacement doors and windows
Customer Service
Quality
Value
AGS replaced my front and back external doors(2) and windows front and back downstairs and upstairs(4). Prompt informative survey without the hard sell of others and they gave me time to consider their quote v others, who were not so patient. Not only was their product rated highly elsewhere but their price was best too. No brainer! Installation within 3 weeks. They turned up on time, hardly stopped working for 3 days and left no mess. I am delighted by my doors and windows and thoroughly recommend them. I want a conservatory now and they will certainly be invited to quote.
Customer in Thurrock Posted on 13/11/2020 , work completed 25/10/2019
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
Exceptional Customer Care
Customer Service
Quality
Value
Having used AGS ltd 7 years ago to instal all our windows, french doors and bifold, we were impressed then. One of the bifold window smashed, I contacted AGS as we have a 10 year guarantee. The start of the phonecall having given my name, was "I remember you Mrs L..." I thought nice, but ok good sales pitch, to which they rattled off our names address and phone numbers from the system! We have a common surname. We aren't even local to the company! I was told glazing wasn't covered by insurance but was given a quote within 20 minutes and installation date shortly afterwards. There would have been a delay of up to 8 weeks due to Covid, I explained we are due to move and needed this replaced asap. AGS asked the glaziers for a big favour and we only waited 3 weeks. Window was fitted very swiftly on the agreed date and time. Locking mechanism adjusted by a very polite tradesman. Our only regret, we are moving to a new build and personally will not be requiring their services, but 100% recommend them
Customer in Hertfordshire Posted on 27/10/2020 , work completed 20/10/2020
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
Great from start to finish
Customer Service
Quality
Value
AGS fitted new windows and back door with a glass mounted cat flap. The service was great, they answered all my queries and questions. The installation was quick and efficient and I am absolutely delighted with the end result. All the staff were very friendly and helpful and the after service care was outstanding. I had one minor query which was sorted immediately. I have already recommended them to a friend. Couldn't be happier with the whole experience.
Customer in Greater London Posted on 08/10/2020 , work completed 23/09/2020
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
My review
Customer Service
Quality
Value
Prompt & quality service
Which? Trusted Traders Consumer Posted on 09/06/2020 , work completed 05/06/2020
The trader replied (on 29/04/2021)
Thank you for your review.
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
Highly recommended (Replacement gutters and windows)
Customer Service
Quality
Value
We had replacement gutters, fascia and windows fitted for our 1920's semi-detached house which has bay windows. The contract was part fulfilled prior to the COVID19 lock-down but some of the work had to wait a few weeks. AGS kept us up-to-date through the process. All work has now been completed to a high standard. We're very happy customers. Dealing with AGS has been a pleasure throughout the process. From initial visit (no hard sales pitch and their quote was quite competitive); to survey/measurements (where they proactively sought to resolve issues) to arranging scaffolding (being flexible with the dates )... the office were very efficient. For the fitting...One team was used for the gutters/fascia and another for the windows. Both teams worked efficiently and were very tidy - keen to make everything "just right". We highly recommend AGS.
Customer in Greater London Posted on 19/05/2020 , work completed 07/05/2020
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
Quality double glazing
Customer Service
Quality
Value
2 large windows and door installed. This is the second time I have chosen AGS for double glazing. Their quotes are competitive and their Installation team are professional, efficient, polite and tidy I am satisfied with the results and would recommend them.
Customer in Greater London Posted on 29/03/2020 , work completed 13/03/2020
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
New Kitchen Door & Window
Customer Service
Quality
Value
After using AGS in the past for windows and front door 4 years ago, they were the obvious choice when we were doing a kitchen revamp and wanted a back door and a window put in. The first point of contact was John and he was very helpful and obliging and said they would fit us in within our time scale. Darren & Gavin the fitters arrived on Saturday morning to cut out the brickwork and fit the new door and window. Both guys where very professional, clean and tidy in their work. New door and window looks a treat, very happy.
Customer in Hertfordshire Posted on 03/03/2020 , work completed 29/02/2020
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
Excellent company to work with
Customer Service
Quality
Value
Really pleased with our new windows from Advanced Glazing, they look incredible in situ and really change the whole vibe at the back of the house. Inside is already noticeably warmer, quieter and lighter! The decorative architrave around the windows is stunning and I love the colour outside! John really understood our brief and delivered everything I was hoping for... and for such a good price. The fitting team were absolutely lovely and really did a fine job - they were a pleasure to have in the house. All of the team were a pleasure to deal with from start to finish - I will definitely be using them again when I have the money to do the front of the house!
Customer in Greater London Posted on 20/02/2020 , work completed 14/01/2020
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