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UPVC (Unplasticised Polyvinyl Chloride) windows have been the UK's most popular window choice since the 1980s. Modern UPVC windows deliver exceptional energy efficiency, security, and durability while remaining remarkably affordable.
Key Benefits of UPVC Windows:
Windows with U-values as low as 0.8 W/m²K (triple glazing) reduce heating costs by up to 20%.
Never needs painting; simply wipe clean with soapy water.
Quality UPVC windows last 20–25 years with minimal maintenance.
Won't rot, warp, or corrode like timber or aluminium.
Most affordable window material while delivering high performance.
Multi-point locking systems and reinforced frames provide superior security.
Double and triple glazing provides effective external noise reduction.
Environmentally friendly material that can be recycled multiple times.
Go for classic white or choose from a range of custom colours in popular styles.
Window Supply Direct supplies custom and bespoke UPVC window configurations to suit any property style. Choose from over 20 window styles, both double and triple glazing options, and multiple colours. All windows are made to your exact measurements with widths from 400–2500mm and heights from 600–2100mm.
The UK's most popular window style. Side-hung casements open outward for maximum ventilation and easy cleaning. Available in single, double, or triple-pane configurations with opening left, opening right, or fixed options. Perfect for modern homes, extensions, and replacement projects.
Versatile European-style windows that tilt inward from the top for secure ventilation or swing fully open for easy cleaning from inside. Ideal for upper floors, bathrooms, and contemporary properties. Available in single or multi-pane configurations up to 2500mm wide.
Non-opening picture windows that maximise natural light and views. Perfect for combining with opening windows or installing in hard-to-reach locations. The most cost-effective option for large glazed areas and a popular choice alongside casement or tilt-and-turn units.
Hinged at the top, these windows open outward from the bottom — excellent for bathrooms, kitchens, and anywhere you need privacy with ventilation. Can be combined with fixed panels to create floor-to-ceiling glazed arrangements.
The sash sits level with the frame for a sleek, contemporary aesthetic. Outward-opening design offers excellent ventilation and simple maintenance. Available in single, double, or triple-pane options — ideal for modern new builds, heritage properties, and high-end replacement projects.
Multi-pane windows combining fixed, opening, and vent sections to suit your exact requirements. Popular configurations include vent-over-fixed, opening-with-fixed-side-panel, and top-hung-with-fixed combinations. Hundreds of colour and style configurations available.
Browse our full range of UPVC windows and select the style and design features that suit your project — including casement, tilt & turn, fixed, or custom combination.
Use our online window designer to input your exact measurements, choose glazing type (double/triple), select colour and glass style, and add optional features. Your price calculates instantly with no personal details required.
Review your order, add delivery (£39.99), and complete secure payment. No deposit required for orders under £500.
Your windows are precision-made to order and delivered in 10–15 working days for stock colours (4–6 weeks for special colours).
Need Help? Call 01684 891588 or email sales@windowsupplydirectltd.co.uk. Our team can assist with measuring, recommending suitable products, or creating custom configurations.
With our comprehensive step-by-step guide you'll have all the information you need to start installing your own windows.