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Trusted Traders

Advanced Glazing Systems Ltd

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295 Reviews

Organisations and Awards

Sep 2019


AGS are experts in all areas of UPVC and Aluminium Home Improvements and we want to help you create your dream home.

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:


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

295 reviews
Customer Service
Sort by
Quality front porch & window replacement, good value, great service
Customer Service
I contacted John after my front porch door had been burgled, realizing old porch needed replacement ASAP to be made safe. I got same day design, quote and the nearest installation date possible given parts are custom made. The team arrived on time, were really nice, worked hard and finished everything to very high quality, leaving everything clean and tidy. The team then returned after 2 weeks to also replace the kitchen window - which was not that urgent. I like the look of the new porch and feel much safer now at home - thanks so much John, Julie and the team for a job well done at a time that I really needed it.
Customer in Greater London31/12/2019
Conservatory replacement
Customer Service
We have an old house and the original small conservatory was becoming dilapidated. We decided to replace it with a larger one. We chose Advanced Glazing Systems after careful research and a site visit. The work was carried out by their regular builder, Alan Fernee, of New Space Developments. We are entirely happy with the product and the workmanship involved. Everything was done carefully and with due regard to the disturbance that was inevitable in such a project. We fully recommend both the product and the builder.
New front windows and door
Customer Service
From the initial visit through to completion of the work every aspect was handled in a very professional manner. The team on the day were excellent; from timekeeping to tidying up at the end. A credit the way the company.
Customer in Essex09/12/2019
The trader replied (on 10/12/2019)
Thank you for your kind review, we always try to look after your property whilst the installation is being carried out to the best of our ability.
Excellent service
Customer Service
We were very pleased with the service received from Advance Glazing Systems. The fitters were very hard working, polite and helpful. They did a reasonable job of cleaning up afterwards and we were surprised that so little touching up was required by us after the windows and door were fitted. The office were very helpful when we requested a slight amendment to our order and they did everything they could to accommodate us.
Customer in Greater London12/11/2019
The trader replied (on 10/12/2019)
Thank you for taking the time to write this review, we are really pleased the installation went smoothly. We always aim to help in any way we can with any order questions.
Excellent Service
Customer Service
Installed 9 UPVc windows and doors. They were clean and tidy, good timekeeping and I would highly recommend.
J Higgins13/10/2019
Full window replacement
Customer Service
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, Brentwood09/10/2019
Excellent work
Customer Service
AGS were replacing windows in a nearby house and I was impressed with the work, so decided to contact them to get a quote for replacing the windows in the two front rooms of my 1st floor maisonette. I telephoned the company and the fitters working on the nearby house came the same day to measure the windows. I received a call from AGS the following day, followed a little later by a further call with a quote which was well below what I thought I would need to spend on the work. Two fitters arrived at 8.30 a.m. on the chosen date and the work was completed by midday. Everything was left clean and tidy and there was no damage whatsoever to the existing windowsill paintwork. The two fitters didn't even take a tea break when tea was offered! I am delighted with the windows, which add greatly to the appearance of my maisonette.
Customer in Greater London27/07/2019
New front door
Customer Service
Can't praise this company too highly. Expertise second-to-none. Their work ethos is exemplary. Arrived on time, removed the old front door, fitted the new double door, tidied up as they went along, so no mess. Demonstrated how the lock worked, nothing too much trouble. I have used them before to fit double-glazed windows, so expected nothing less than perfection, which certainly was confirmed. I would have no hesitation in recommending them for customer service, quality of workmanship and value for money.
Pauline Diable17/07/2019
Great company
From the 1st consultation,discussing all options & aspects of supplying & fitting of windows & doors this was carried out with expertise. From the start date to completion everything was done with absolute satisfaction.We couldn’t believe the care & attention that we received from AGS,which has been outstanding.
Mickey18/06/2019 (Reviewer did not use service)
First class professional
Customer Service
Full consultation including bay window, front & back door & 8 windows. Very professional, clean, polite, good time keeping couldn't praise them enough.
Coneilious, London21/01/2019