About Mazuli
A fully accredited Cortizo aluminium supplier and one of the largest in the UK, manufacturing premium doors and windows from our state-of-the-art factory in Leeds
Our Story
Mazuli was founded in 2020 with a simple but ambitious goal: to give trade professionals access to premium aluminium doors and windows with the fastest lead times and most transparent pricing in the UK.
Starting from a single unit in Leeds, we quickly built a reputation for quality, speed, and reliability. Builders, architects, and contractors across the country turned to Mazuli because we delivered on our promises — every order, every time.
By 2023, demand had grown so significantly that we opened a brand new 25,000 sq ft state-of-the-art factory at Westgate Link, with our original Gelderd Road unit continuing as a dedicated warehouse. Today, we're proud to be the one of the UK's largest suppliers of Cortizo aluminium products, serving both trade and retail customers nationwide.
Inside the Factory
Take a tour of our state-of-the-art manufacturing facility at Westgate Link, Leeds
Featured on George Clarke's Kitchen vs Garden
Our aluminium doors and windows were featured on the popular Channel 4 show, George Clarke's Kitchen vs Garden. Watch the installation team fit our products on site and see the stunning finished result.
It's a testament to the quality of our Cortizo aluminium systems — trusted by professionals and chosen for one of the UK's most-watched home improvement programmes.
Why Choose Mazuli?
Three things that set us apart from every other aluminium supplier in the UK
Fully Accredited Cortizo Supplier
We're a fully accredited supplier of the Cortizo aluminium product range and one of the largest in the UK. As a Cortizo-certified manufacturer, every product we make meets the highest European standards for quality and performance.
Industry-Leading Lead Times
Most products ready within 2–10 working days. We control the entire process from our Leeds factory, so there are no delays and no middlemen between your order and delivery.
Nationwide Delivery, Our Fleet
We deliver across the entire UK mainland using our branded fleet — no third-party couriers. For Northern Ireland and the islands, we deliver directly to the connecting port.
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Official Cortizo Certified Manufacturer
We're proud to be the UK's largest supplier of Cortizo aluminium products — one of Europe's leading manufacturers of aluminium systems for architecture and industry.
Every Mazuli product is built using premium Cortizo profiles, rigorously tested in official national and international laboratories for watertightness, air permeability, and wind resistance.
Quality Certifications
QUALICOAT
European quality seal for powder-coated aluminium in architecture — guaranteeing coating thickness, adhesion, and UV durability.
QUALIDECO
International certification for decorative coatings on aluminium, ensuring consistent colour and finish quality.
SEA-SIDE
Enhanced corrosion protection certification for coastal and marine environments — deeper etching and superior pre-treatment.
Our Facilities
Our 25,000 sq ft manufacturing facility at Westgate Link is where every Mazuli product is made — from cutting and fabrication through to assembly and final quality control. Our original 9,000 sq ft unit on Gelderd Road serves as a dedicated warehouse, keeping stock ready for rapid dispatch.
By keeping manufacturing and logistics in-house, we have full control over every product that leaves our doors — and it's how we maintain the fastest lead times in the industry.
Delivery fleet
No third-party couriers — fixed delivery dates that won't change
Nationwide UK coverage
Mainland UK delivery included. NI and island deliveries to connecting port
Transparent tracking
Know exactly when your order will arrive — no surprises
Leeds, West Yorkshire
Two factory sites
Get In Touch
Have a question or looking to speak to an account manager? We'd love to hear from you
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Wellington Bridge Street, Leeds
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