Advanced Glazing Systems Ltd Logo

Advanced Glazing Systems Ltd

Folkes Lane, Upminster
+Approved member since 2013
Advanced Glazing Systems Ltd

Services and skills

  • Windows / Doors / Conservatories

    22 skills

    Double Glazing Installation

    Window Fitters

    Aluminium Windows Installation

    Bay Windows Installation

    Bifold Doors Installation

    Cat Flaps

    Composite Front Doors Installation

    Conservatory Installation

    Dog Flaps

    Exterior Doors Installation

    Double Glazing Repair

    French Doors Installation

    Glass Replacement

    Misted Double Glazing


    Patio Doors Installation

    Secondary Glazing

    Stable Doors

    Triple Glazing Installation

    UPVC Repairs

    UPVC Windows Installation

    Windows and Doors

  • Services

    4 services

    • Domestic Work
    • Commercial Work
    • Free Estimates
    • Cards Accepted


Customer reviews

Overall ratingin last 12 months

9.9Write a review
  • Workmanship9.94 out of 10
  • Tidiness9.82 out of 10
  • Reliability9.94 out of 10
  • Courtesy9.91 out of 10
  • Quote Accuracy100 out of 100
Write a review

630 Total Reviews

The reviews below represent customers' views and not the views of Checkatrade

  • New aluminium patio doors between lounge and conservatory

    9Verified Review

    Initial survey, installation and a return visit all carried out at agreed times. Communication with company was good. Installation was efficient. Unfortunately the wrong coloured handles were supplied by the manufacturer. A return visit a week later corrected that problem. Product looks good, doors slide well and deaden external sound well. Here's hoping they will continue to do that for many a year to come. No problem saying AGS are a sound reliable company

    Location: CM4
  • Patio door and side door

    10Verified Review

    I had a side door fitted to a garage in September and from my experience, as I was very happy with that one door, I contacted AGS to supply another side door to a kitchen and a new patio door which have been fitted in November. I cannot fault any part of the job from ordering, surveying, etc - to especially - Steve the fitter - fitting the products. He has vast experience and knowledge. If I need anymore products in the future I will contact AGS in the first instance.

    Location: RM11
  • Door panel and pet flap installation

    10Verified Review

    Job well done, in good time.

    Location: E4
  • Double glazed glass unit of large sliding patio door

    10Verified Review

    Absolutely first class service from the initial enquiry to completion of the job. Had a double glazed unit of a large patio door replaced - took three men to lift it! They were efficient and professional. Job was done with no fuss, quickly, tidily and with a few laughs along the way manoeuvring the unit from their vehicle, through my property and into place!! Would wholeheartedly recommend this company. Thank you!

    Location: RM3
  • Had street door measured and fitted by AGS

    10Verified Review

    Knowledgeable, punctual and polite. Great family business. They go the extra mile.

    Location: CM5
  • Re align/ hang and adjust porch door.

    10Verified Review

    Excellent, he was fast efficient, knew his job, polite tidy. Will use again for window and door issues, double glazing etc. Very happy to recommend, a reliable professional company.

    Location: IG8

Company profile

  • OwnerMr Andy Barnett
  • Member Since2013
  • Public Liability InsuranceSelf-Certified
  • AccreditationsChecked
  • AddressChecked
  • IdentityChecked
  • Checkatrade T&C'sSigned
  • VATYes: 848 8168 73
  • Company typeLtd Company

Company info

AGS are the experts in all areas of UPVC 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 do not use agents on commission, that would typically try to bully you into a sale you were not comfortable with. We let the product speak for itself 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 and budget.

Contact us today and find out for yourselves.

We work harder and go the extra mile to offer discerning homeowners the highest quality custom made window, door, roof line and conservatory products at the best value-for-money, with reliable hassle free installation and a no quibble guarantee.

Here at AGS we take our clients requirements very seriously.

  • You will receive the benefit of our vast knowledge and experience to give you the best possible advice.
  • You will receive the most state of the art product range option.
  • You will receive the highest possible standard of service and after-service.
  • You will receive our Ten Year No Quibble Guarantee.
  • And all of the above will be brought to you at the most unbelievable prices.

AGS are registered with both FENSA, together with TGAS who are operated by Chartered Trading Standards Institute certified ADR body, and are Trustmark Endorsed for complete peace of mind that you are dealing with a company that has your interests at heart.

AGS supply and fit, or supply only, the following product range:

  • Windows - All Energy Rated 'A'
  • UPVC Sliding Sash
  • UPVC Doors
  • Composite Doors
  • Lantern Roofs
  • Roof Lights
  • Conservatories
  • Fascias, Soffits and Gutters
  • Bifold and Sliding Doors
  • Cladding

Our product ranges above are available in the following:

  • UPVC - White, Rosewood, Oak, Black or any RAL* colour
  • Aluminum - White, Brown, Black, Silver or any RAL* colour

To discuss our product ranges and finishes with one of our friendly advisors, please contact us. We provide free quotes and estimates and are always available for helpful advice. Call today and ask about our OAP discount.


  • FENSA Registered no 31672
  • TGAS Membership 
  • All Major Credit Cards Excepted

Contact details

Accreditations and awards