Business Details
45 Years
experience
Your Trusted Partner for Architectural Glazing Solutions in London
Established in 1981, we are a family-owned business specialising in the manufacture, supply, and installation of aluminium and uPVC windows, doors, and structural glazing solutions. With over 35 years of experience, our expertise lies in delivering bespoke architectural glazing systems that combine minimalist design with innovative glass technology. Our manufacturing facility in Watford enables us to maintain strict quality control and efficient lead times for projects within the M25 area. We collaborate closely with architects, designers, and structural engineers to transform visionary designs into reality, prioritising sustainability through FSC-certified timber and eco-conscious aluminium systems.Our commitment to excellence is reflected in our industry-leading warranties, which are insurance-backed for added client security. We pride ourselves on long-term relationships, with over 90% of our work stemming from direct recommendations, and continuously invest in factory upgrades to meet evolving client needs.
Services
Bifolding Doors
Sliding Doors
Entrance Doors
Heritage Doors
ID30 Internal Doors
Casement Windows
Tilt and Turn Windows
Timber Sash Windows
Bespoke Glazing
Glass Roofs
Details
- Year established: 1981
Highlights and features
- We have over 35 years of experience in custom glazing solutions.
- Our in-house manufacturing ensures quality control and efficient lead times.
- We use FSC-certified timber and sustainable aluminium systems.
- Our projects benefit from insurance-backed, industry-leading warranties.
- Over 90% of our work comes from direct client recommendations.
What people say
Excellent service
Highly recommend
Professional team
Great communication
Quality work
Services
Bifolding Doors
Our bifolding doors combine sleek aluminium frames with expansive glazing to create seamless transitions between indoor and outdoor spaces. Designed for modern and traditional properties, these doors maximise natural light while maintaining thermal efficiency. Customisable in size and finish, they offer smooth operation and durability for residential and commercial applications.
Bespoke Glazing
Tailored glazing solutions cater to unique architectural visions, including structural glass walls, oversized windows, and frameless designs. We ensure precision engineering for safety, energy efficiency, and aesthetic impact. Our team collaborates directly with clients to achieve transparent, minimalist structures that enhance natural light and spatial perception.
Sliding Doors
Slim-profile sliding doors feature advanced aluminium systems for effortless movement and unobstructed views. Ideal for contemporary extensions or renovations, they provide excellent weatherproofing and security. Available in custom configurations to suit both residential and commercial spaces while maintaining energy efficiency.
Casement Windows
Casement windows offer traditional elegance with modern performance, featuring secure hinges and energy-efficient glazing. Available in timber or aluminium, they provide excellent ventilation and acoustic insulation. Customisable to match heritage or contemporary designs for homes and commercial buildings.
Glass Roofs
From flatglass rooflights to expansive glass ceilings, our bespoke glass roofs flood interiors with natural light. Engineered for strength and thermal performance, they include walk-on panels and structural silicone joints. Ideal for extensions, atriums, or modernising period properties with minimal visual disruption.
Questions
What types of windows and doors do you specialise in?
We specialise in aluminium and uPVC bifolding doors, sliding doors, casement windows, heritage doors, and bespoke glazing systems tailored to modern and traditional properties.
Do you operate outside London?
While based in London, we serve clients across the M25, Hertfordshire, Surrey, and surrounding areas, with nationwide delivery options for manufactured products.
Are your products energy-efficient?
Yes, all our windows and doors meet strict energy efficiency standards, featuring thermal breaks, double-glazed units, and sustainable materials to reduce heat loss and carbon footprints.
What warranties do you offer?
We provide insurance-backed, industry-leading warranties covering profiles, workmanship, and sealed glass units, ensuring long-term peace of mind for our clients.
Can you handle large-scale or complex projects?
Our team has extensive experience with challenging projects, including oversized glass units, structural glazing, and custom designs requiring precision engineering and installation expertise.
How do you ensure sustainability?
We use FSC-certified timber, recyclable aluminium, and partner with waste management experts to minimise environmental impact across our manufacturing and installation processes.
Videos
Reviews (5)
Camila Lunardon
Sep 22, 2021
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I would give this place zero stars. I called to ask if they could do a repair and they're not able to if they didn't install the windows which is acceptable but one of the repairs I have isn't the actual window it's the door lock and the person who answered the phone wouldn't even listen to my quesiton. He just wanted to rush me off the phone and couldn't be bothered. There's no point in dealing with people like this, because the first thing you want is good customer service. If you want friendly reliable glazer use Henry and Sons who've been great in past jobs.
Robin Walker
May 30, 2021
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Have had incredibly outstanding, quite superbly excellent service from Southern Windows (huge personal thank you Mariusz) when doing two items of work ay my flat first half of 2021: in my experience have rarely had such quite outstandingly efficient service. The same guy who did both fittings did another excellent and fast job (this fitter deserves a special "thank you" all on his own). Wish all equipment installations had this seriously efficient service.
Robin Walker
Robin Walker
Richard Bartlett
Jan 01, 2021
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Out of the many contractors involved in our house renovation, Southern Windows was without any doubt the very best one.
Thomas invited us to visit the showroom out of their opening hours and spent a great deal of time answering all our questions. He helped us to choose the right model and colour for our rear facade and the Schucco doors look fabulous. Every appointment made (either measurement, installation or after sales) was kept and the original timeline respected. In summary great product, outstanding service and very competitive price: I would not let any friend go anywhere else in London
Thomas invited us to visit the showroom out of their opening hours and spent a great deal of time answering all our questions. He helped us to choose the right model and colour for our rear facade and the Schucco doors look fabulous. Every appointment made (either measurement, installation or after sales) was kept and the original timeline respected. In summary great product, outstanding service and very competitive price: I would not let any friend go anywhere else in London
Amanda Head
May 11, 2020
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Southern supplied our windows and 2 sets of sliding doors, we have found them to be a great Company to deal with. From the very first time we met Mariusz in the showroom to installation they have been absolutely brilliant. They kept us informed at all times and we are delighted with the end product. Thank you to Tomaz and the whole team=Amanda
Irfan Versi
May 12, 2019
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We had our whole house fitted with Schucco windows and doors from Southern. Excellent products and fitting excellent. Our sliding doors are two 2.4m panels and are so easy to open and look amazing.
Aftercare has been good also with any issues being looked at and sorted. Would recommend.
Aftercare has been good also with any issues being looked at and sorted. Would recommend.
