Supplying The Trade Nationwide Since 1996
Proven, trusted whole-project fenestration solutions - we sell everything the trade needs under one roof!
Explore Our Ranges
Expertly Engineered Whole Project Fenestration
We make it easy for trade partners to deliver quality and value to their customers. Our expansive range includes energy-efficient aluminium and uPVC doors, windows, and roofing - all manufactured in-house for consistency and reliability. With bespoke products, fast turnaround times and unrivalled service and support from our friendly team of experts, you can trust us to help you deliver outstanding results on every project.
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About Us
Where Thermal Efficiency Meets Exceptional Craftsmanship
With over 50 years of experience, Carlisle Window Systems has been supplying trade installers and domestic customers nationwide with high-quality aluminium and uPVC doors, windows, roofing, glazing, conservatories, orangeries, and sunrooms. All expertly engineered for efficiency and designed to impress.
All of our products are made in-house using premium, energy-efficient materials and come with a reassuring 10-year guarantee.
From personalised design to expert installation, we make upgrading your clients properties really easy, stress-free and great value.
Our products. Our people. Our passion. Your profitability!
Stay Ahead With Expert Knowledge
Looking for product details, specs or inspiration? Our brochures give you everything you need to explore our full range of doors, windows, and roofing. Easy to browse and packed with useful information, they’re designed to help you choose the right products for your customers with confidence.
Accredited Fenestration
Carlisle Window Systems are also fully PAS 24 accredited!
Helping our customers to confidently quote and supply compliant fenestration.
Backed by independent product testing, robust factory production control procedures and proven manufacturing processes, our windows and doors meet recognised British standards for product performance, weather performance, operation, strength and enhanced security.
BS EN 14351-1 Product Performance | BS 6375 Weather Performance, Operation & Strength | PAS 24 - Enhanced Security.
More capability. More project opportunities. One trusted fenestration supplier.
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Our Supply Partners
The best systems. The best materials. One trusted source.
