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Marathon Windows Ltd

4.9

173 Reviews

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About

Marathon Window Company - Installers of high quality thermally efficient double glazing products since 1975. Surreys leading specialist in designing and installing conservatories, orangeries, garage conversions, double glazing windows and replacement doors.

What we do

  • Double glazing

    • Double glazing installation
    • Double glazing repairs
    • Double glazing suppliers
  • Conservatories

  • Doors

    • Bi-fold doors
    • Composite doors
    • Front door
    • Patio doors
    • French doors
    • Orangeries
    • UPVC doors
    • Timber doors
  • Glaziers

    • Replacement window services and repairs
    • Sash windows
    • Aluminium Windows
    • Window consultants
  • More Services

    • plantation shutters

Customer reviews

Why you can trust these reviews

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100% of the reviews we publish have been through our stringent moderation process.

4.9
173 reviews
Customer Service
5.0
Quality
4.9
Value
4.9
Sort by
Replacement windows
Customer Service
Quality
Value
We were so pleased with the first order of replacement windows and new front door that Marathon had installed previously that we did not consider any other company to fit more replacement windows. From initial assessment to final fitting everything was carried out in a friendly and efficient manner. The problem we had had with our bay window was solved and we no longer have issued with damp patches underneath. We have pleasure in wholeheartedly reccommending Marathon Windows.
Customer in Surrey Posted on 19/03/2025 , work completed 10/01/2025
Lovely new front door
Customer Service
Quality
Value
Great, prompt guys fitted our front door. Very efficient, professional and friendly. Lovely quality door. Jane is very helpful and friendly. I would recommend marathon windows.
Customer in Surrey Posted on 03/03/2025 , work completed 02/01/2025
Fabulous!
Customer Service
Quality
Value
Marathon were fab. The lady who came for the first measure-up was brilliant, understanding aesthetics and balancing costs, as well as talking through legal technicalities like fire openings. Compared with other companies we saw, it was chalk and cheese. And to cap it all, they came out best on price too, so there was no decision to make! On the day the guys were fabulous – dust sheets everywhere so no mess or dust, very considerate at keeping disruption to a minimum, and were finished earlier than planned. All great from start to finish and I’ve already recommended them to friends!
Customer in Greater London Posted on 24/02/2025 , work completed 11/02/2025
Very satisfied
Customer Service
Quality
Value
Marathon windows replaced 2 existing metal double-glazed windows on the second floor of the house. The windows were installed without needing scaffolding and are a major improvement on what we had previously. The company was helpful and efficient throughout, and the work was done on time and without leaving any mess.
Customer in Surrey Posted on 07/02/2025 , work completed 17/12/2024
Good service with conscientious and courteous employees
Customer Service
Quality
Value
Excellent service throughout. No issues other than our house had difficult access. They found a way to get 4 bifold doors to the back of the property on the day and finished to a very high standard. A local company and one I would urge local people to support.
Customer in Surrey Posted on 08/12/2024 , work completed 03/12/2024
new windows
Customer Service
Quality
Value
Marathon installed 6 wooden sash windows for me. There is a long lead in from ordering to installation, but that's because the windows have to be specially made to order from another manufacturer, so I was expecting that. The guys that came to install them were really good, the installation went smoothly and when they did encounter problems they solved them - the windowsill outside on the bay window was rotten and fell apart when they took the old windows out so they made a new sill in hardwood and fitted it beautifully and then got a painter in to paint the sill and some other areas. All in all very pleased.
Customer in Surrey Posted on 18/11/2024 , work completed 18/11/2024
Excellent again from Marathon
Customer Service
Quality
Value
We have no hesitation in recommending Marathon Windows. This is the fourth time we’ve used them as we have moved house. They come down to West Sussex and have fitted all new windows and doors for us. The service from Tony when measuring is excellent and the fitters are all cheerful and friendly. No mess left in the house at the end and all windows work perfectly.
Customer in West Sussex Posted on 14/11/2024 , work completed 24/10/2024
Replacement front of house windows - Amazing job
Customer Service
Quality
Value
My husband installed our front windows some 40+ years ago and it was time for them to be replaced. We were recommended Marathon Windows (a family run business) by a neighbour. Mum (Jane) came to quote, Dad (Tony) came to survey & measure and, within 6 weeks, Son (Luke) came to install. We were informed that the upstairs front windows would be replaced on the first day and the downstairs the second day and that’s exactly what happened. Luke, Jack and Les were so professional: punctual arrival time - with only a short break for lunch - respectful use of dust sheets and, at all times, polite and cheerful. Our windows now look spectacular and the boys left everything neat and tidy – both inside and outside. It honestly looked like no-one had been in the house at all! You could see they took great pride in their work – and it showed. Incredible service from start to finish, we cannot fault them at all. Without hesitation, we highly recommend this wonderful family business.
Customer in Greater London Posted on 29/09/2024 , work completed 25/09/2024
Excellent service for window replacement from Marathon
Customer Service
Quality
Value
Replaced the main Window in our conservatory and another window in one of our bedrooms. Polite, clear guidance, reasonable prices, timely completion and clean way of working. Cannot fault Marathon and would definitely recommend.
Customer in Surrey Posted on 12/09/2024 , work completed 23/08/2024
Excellent service.
Customer Service
Quality
Value
From start to finish our experience with Marathon Windows was nothing but positive. We had a problem with existing bay window which was diagnosed by the surveyor. A new bay was fitted by their expert workmen who were friendly and proficient - and left no mess. We also had a beautiful new front door fitted with the same proficiency. We considered the price of both window and door to be extremely fair and the experience was completely stressless. We have no hesitation in recommending Marathon Windows and will certainly use them again.
Customer in Surrey Posted on 17/08/2024 , work completed 16/07/2024