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Advanced Glazing Systems Ltd

4.9

369 Reviews

Opening Hours
Today -
  • 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
See customer reviews & leave a review

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

My work

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
Recommended

Recommended

by 100% of customers
Sort by
WONDERFUL FLUSH FITTED WINDOWS
Really very pleased with the quality of our flush fitting windows. The fitters arrived on time every day and took all old windows away, they were always helpful with any issues we had. Would definitely recommend Advanced Glazing Systems.
Customer in Essex Posted on 16/10/2025 (Reviewer did not use service)
Recommended
The trader replied (on 26/11/2025)
Thank you for your kind review.
Lovely new front door
Customer Service
Quality
Value
AGS were super helpful from the start. We have tried 3 or 4 times in the past to get a new fire rated front door (FD 30), glazed, with no success, but AGS made it a pleasant and straightforward process. From the initial consultation, survey and fitting, they took trouble to make sure we got exactly what we wanted. Looking forward to winter now, with no draughts, and lots of light coming in, we are so pleased with the door which has transformed our flat!
Customer in Greater London Posted on 23/05/2025 , work completed 14/05/2025
Recommended
The trader replied (on 26/11/2025)
Thank you for your kind review.
Professional and efficient
Customer Service
Quality
Value
Very professional from the first meeting delivered all responses. Work and schedules on time and to a high standard. Would not hesitate to recommend.
Dena, Essex Posted on 05/03/2015 , work completed 05/03/2015
Recommended
Which? Local Review
Customer Service
Quality
Value
Small family company, no hassle sales pitch, sensible, honest, good workmanship. Took nightmare out of looking for double glazing company.
Which? Trusted Traders Consumer Posted on 04/08/2009 , work completed 04/08/2009
Recommended
100% satisfaction on all aspects.
Customer Service
Quality
Value
On 04/02/10, we had the windows and door replaced by AGS and were very impressed by the professional way our order was taken with help, then the very high quality of materials and fittings. On 30/09/15 we chose AGS again to fit windows and door to a new extension on rear with same full satisfaction.
William, Kent Posted on 30/09/2015 , work completed 30/09/2015
Recommended
Excellent job, happy with work.
Customer Service
Quality
Value
Very happy with work that was done, replacing three windows and fitting new porch door. Tradesmen professional, tidy and courteous. Very happy with company.
Catherine, London Posted on 04/11/2015 , work completed 04/11/2015
Recommended
Excellent job
Customer Service
Quality
Value
Very punctual, work carried out to an excellent standard. First class service from the start.
Valerie, Essex Posted on 30/11/2015 , work completed 30/11/2015
Recommended
Super from start to finish!
Customer Service
Quality
Value
Great customer service from initial consultation through to installation. Delighted with product and manner in which it was installed. No mess, no fuss!
Joanne, Essex Posted on 08/02/2016 , work completed 08/02/2016
Recommended
Brilliant job
Customer Service
Quality
Value
The boys were very professional and friendly. Well done.
Which? Trusted Traders Consumer Posted on 11/02/2016 , work completed 11/02/2016
Recommended
My Review
Customer Service
Quality
Value
Excellent.
Mark, Essex Posted on 25/09/2015 , work completed 25/09/2015
Recommended
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Have a question?

029 2267 0040
Mon–Fri: 9:00–17:00
Standard network rate.

Have a question?

029 2267 0040
Mon–Fri: 9:00–17:00
Standard network rate.