Endorsed by Which?

Southside Window Systems Limited

4.9

323 Reviews

Opening Hours
Today - 07:30–13:00
  • Monday 07:30–16:30
  • Tuesday 07:30–16:30
  • Wednesday 07:30–16:30
  • Thursday 07:30–16:30
  • Friday 07:30–13:00
  • Saturday - Closed
  • Sunday - Closed

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About

Southside Window Systems are a specialist Windows and Door company. supplying and installing Double Glazing , UPVC Windows and UPVC Doors in and around Glasgow.

Established in 1997, we are a family run business that supplies and installs Rehau Total 70S Double Glazing UPVC Windows in Glasgow and Doors in Glasgow to trade and public. All of our Double Glazing Units are manufactured directly from the Pilkington factory.

Southside Window Systems Ltd are associate members of rehau with a 10 year guarantee available.

Our team of highly skilled fitters all have a minimum of 10 years experience in the trade and all have to be trained to Rehau's high standards with customer care and quality being the top priority.

All our products are custom manufactured on an individual basis to match your own personal requirements.

With our fantastic choice of windows and doors in a range of styles and finishes (including sash windows in Glasgow),

What we do

  • Double glazing

    • Double glazing installation
    • Double glazing suppliers
    • Double glazing repairs
  • Doors

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

    • UPVC Windows
    • Sash windows
    • Double glazed units
    • Double glazing installation
    • Replacement window services and repairs
    • Stained glass
  • More Services

    • palladio door

Customer reviews

Why you can trust these reviews

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How can we be so sure?

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

4.9
323 reviews
Customer Service
5.0
Quality
5.0
Value
4.9
Sort by
Brilliant
Customer Service
Quality
Value
Really impressed with Southside Windows. Great Windows, excellent and professional fitters. Did the job on time, cleaned and tidied afterwards, really couldn't fault a single thing.
Customer in Glasgow City Posted on 15/01/2026 , work completed 15/01/2026
Super service
Customer Service
Quality
Value
Contacted Southside windows as my elderly mother wanted to replace windows. From start to finish their service was outstanding. Russell the owner came out to measure up. There was no pressure at any time. Explaining the materials used and options available. The next day Mum received a very detailed email explaining exactly how the work would be done, again detailing exactly all the materials used using graphs and diagrams. Email was prepared by Russell's Daughter. It was excellent. Once a date was agreed to fit. The fitters Craig & David showed up, bang on time. Took no time at all fitting the windows. No hiccups, no mistakes. They worked perfectly together and fitted the windows in no time at all. There was little to no Mess and the lads cleaned everything up, so professional, top blokes. I genuinely can't recommend this Company enough. A Family run business, where every one of them are playing their part. The price was extremely competitive in compartments the ither 2 or 3 companies Mum got quotes from. They were so down to earth, honest and genuine and an absolute pleasure to deal with. Please consider using Soutside Windows. They've been going for years and deserve their 5 star rating. I cannot fault them. My wee Mum is so pleased and she's a very difficult Lady to please!!! Well done Southside Windows. From owner, Office Staff and Fitters....take a bow. It's a very rare thing these days to get top notch service. You guys achieved it. 👏
Customer in Glasgow City Posted on 12/01/2026 , work completed 04/11/2025
Delighted with Replacement Windows
Customer Service
Quality
Value
Extremely pleased with the work done by Southside Windows. We’ve had 2 bay windows replaced. They are of very high quality and look great enhancing the appearance of front of house. The fitters Ian and Michael did a wonderful job. There was no mess and all debris removed swiftly. This has been a really worthwhile experience and we would highly recommend Southside Windows to our friends and associates.
Customer in East Renfrewshire Posted on 08/01/2026 , work completed 08/01/2026
New UPVC sash window
Customer Service
Quality
Value
After scouting around, we chose Southside Windows to replace a window in our Edwardian home. We wanted the window to look as authentic to the era as possible and Southside Windows gave us a really great price. A month later, the work was carried out and we’re delighted with it. Two men did the job and they were very polite, professional and respectful of our home. They covered carpets and cleaned up afterwards. I would definitely recommend Southside Windows for beautiful windows, in keeping with the age of the house and without the eye watering cost of some other companies we approached.
Customer in Glasgow City Posted on 08/01/2026 , work completed 08/01/2026
Super Southside windows Systems
Customer Service
Quality
Value
Supply & install I had seen Southside Windows vans around the area and I checked out their website and liked what I read. I contacted them, arranged a home visit, had dimensions taken and agreed price. They kept me fully informed, agreed installation date and turned up on time with a full team, all very professional and cheerful. On completion they presented the work and informed me that there was a manufacturing fault ( which was not noticeable to me ). They resolved this with the manufacture and replaced the part. They suggested that I retain part of final payment until fully satisfied. They left the place clean. Full communication throughout the contract and a cheery Merry Christmas from the team.
Customer in East Renfrewshire Posted on 06/01/2026 , work completed 18/12/2025
Great work. Fantastic company to deal with.
Customer Service
Quality
Value
The team are lovely. They could not have been more helpful and accommodating, getting windows measured, ordered and fitted in a tight turnaround time. The windows are excellent quality, I noticed a huge difference straight away. Even though there was a minor error on the order (which didn’t really affect me at all) they took ownership of the error and it didn’t cause any delay to fitting. Wouldn’t hesitate to recommend them to anyone and will definitely use them again in future.
Customer in East Renfrewshire Posted on 05/01/2026 , work completed 17/12/2025
Double glazing windows
Customer Service
Quality
Value
I was really pleased by the work carried out by Southside Windows. Their customer service was very helpful and they would always respond promptly to my emails and questions. They made me aware of Home Energy Scotland and my eligibility for a loan to help with the cost of installing double glazing. The men who installed the windows were polite, professional and efficient in their work. I am very happy with the look and quality of the windows which have replaced traditional timber windows. The new windows still fit the character of an old tenement flat well.
Customer in Glasgow City Posted on 18/12/2025 , work completed 17/12/2025
Repeat customers - very pleased with all aspects of Southside Windows
Customer Service
Quality
Value
We've used Southside Windows to replace external doors and fit bay windows. We've used them more than once because we're happy with the products, workmanship and their reliability for turning up when they say they will. I also like the efficiency of booking in with them via email with dedicated office staff to organise things.
Customer in East Renfrewshire Posted on 03/12/2025 , work completed 03/12/2025
1st class company
Customer Service
Quality
Value
I have used Southside Windows before, and as always, they provide an excellent service. Repeat business is the best endorsement! They arrive exactly when they said they would, work quickly and quietly and tidy up perfectly. The guys are really polite and helpful. Also, the windows are beautiful and work well.
Customer in East Dunbartonshire Council Posted on 26/10/2025 , work completed 24/10/2025
Replacement windows
Customer Service
Quality
Value
We needed replacement of fourteen windows to upgrade the builder’s original but rather poor quality wooden windows installation. I would have no hesitation in giving five stars to Southside Windows for every stage of the process through to completion of the installation and the windows themselves. The prospect of such a big job was worrisome but we needn’t have been concerned. Russell carried out the initial assessment, then measuring and estimating with calm efficiency and courtesy. From there, it was a few weeks waiting for the windows to be made and then booking installation. The team of joiners arrived as arranged and bang on time. It was then a case of ‘leaving it to the professionals’ and they did not disappoint. Of course, it is not possible to remove and install windows without dust and some mess but the men cleaned as they went, which meant that all we had to do was a light ‘Spring clean’ when the whole job was finished. If we had known about the proficiency and quality of Southside Windows, we’d have saved ourselves years of worrying whether we should or should not replace the windows and we’d have had this job done years ago.
Customer in East Renfrewshire Posted on 17/10/2025 , work completed 27/08/2025