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High-Performance uPVC Windows

Window fitting
Door installation
Conservatory fitting
In-house design service
Double glazing
Soffits, fascias & guttering

Quality uPVC Windows

Castle Windows specialises in advanced uPVC technology, engineered for superior thermal insulation and structural integrity. Our collection includes Flush, Sash, Tilt and Turn, and Foiled designs, ensuring every installation meets the highest architectural standards. We utilise premium Aluplast profiles to ensure every window is built to withstand the elements while providing a maintenance-free, stylish finish for your property.

We provide service that we’re proud
to put our name to

Glazed uPVC Windows

Modern uPVC is a naturally poor conductor of heat, making it the ideal thermal barrier. Our frames feature a 5-chamber Aluplast internal profile and Argon gas-filled units to achieve industry-leading U-Values. This engineering stops heat loss by creating “dead air” pockets within the frame, ensuring your home maintains an A-Rated energy efficiency level and a lower carbon footprint year-round.

CE Marking

Castle Windows complies with all CE Marking requirements. All external windows exceed these standards, with full compliance handled by our expert installation team.

Why Choose Castle Windows
Key Technical Advantages

We recognise that your windows do more than fill an opening; they provide the primary barrier for thermal efficiency and home security.

Enduring Durability
Built for structural rigidity, our 70mm profiles are impact-resistant and immune to warping or rotting. The high-grade materials ensure frames remain weather-tight for decades, maintaining peak performance regardless of the season.
Security & Internal Beading
Security is integrated into every frame. Each window features multi-point locking systems (including Yale hardware). A critical feature is our Internal Beading; because the glass is secured from the inside, the units cannot be removed from the exterior, providing 24-hour protection.
Optimal Energy Efficiency
Our windows act as a high-performance thermal shield. The multi-chambered design prevents thermal transfer and eliminates draughts, ensuring your home remains energy-efficient and comfortable even in the harshest winter conditions.
Maintenance & Care
Forget the upkeep of painting traditional timber. Our uPVC units require nothing more than a simple wipe-clean with soapy water and an occasional drop of oil on the friction stays. These UV-stabilised, no-painting-required frames never fade or discolour.
Material Performance Comparison
Feature uPVC Traditional Timber Standard Aluminium
Maintenance Wipe-clean only Needs sanding/painting Occasional cleaning
Thermal Value Excellent (A-Rated) Good (if maintained) Moderate (varies)
Durability 30+ Years 15-20 Years (approx) 25+ Years
Cost Most Cost-Effective Expensive Premium

Get A Quote For Your uPVC Windows Today!

Complete your details to book a free no-obligation appointment. We can help advise on the best technical specifications, arrange a free design consultation, or answer any architectural questions you may have.

Design And Customisation Features

Our uPVC windows are engineered to enhance your home’s look while providing modern functionality.

  • Precision Design Range: Whether you require timeless elegance or contemporary minimalism, our broad array of designs ensures a perfect match. From slimline frames to intricate glass patterns, each window is crafted to enrich both the view and the insulation.

  • 13-Colour Foil Palette: Move beyond standard white with 13 woodgrain foils. These provide the realistic texture of painted timber—including Irish Oak, Rosewood, and Anthracite Grey—for a permanent, weather-resistant finish.

  • High-Spec Hardware: Customise with professional-grade furniture. Choose from various handles, decorative Georgian bars, and high-security locks to add a personal touch while maintaining mechanical excellence.

uPVC Windows Professional Installation

Castle Windows installs top-quality uPVC windows and doors. Dependable, fashionable, and energy-saving options for your home.
Professional Installation Standards

At Castle Windows, we are proud to be a leading specialist in the supply and installation of superior uPVC products. From our central base, we cater to a variety of home styles and are dedicated to delivering outstanding technical service to all our customers across the West Midlands and Staffordshire regions.

Our team operates with precision, assisting with high-performance replacements that enhance your property’s efficiency. As a Which? Trusted Trader and Checkatrade-approved supplier, we adhere to the highest industry standards, and all installations are covered by an Insurance Backed 10-year Guarantee.

Frequently Asked Questions
What are uPVC windows?
uPVC (unplasticized polyvinyl chloride) is a rigid, non-flexible material resistant to moisture and corrosion. It is a poor conductor of heat, ensuring it does not warp or require repainting, making it the premier choice for modern construction.
Yes. Our Aluplast frames are designed with multiple internal chambers that trap air, significantly reducing thermal transfer. This insulation helps maintain a comfortable temperature while preventing draughts and lowering energy bills.
Yes, our windows can be customised in 13 various colours (including woodgrain foils), styles, and hardware configurations to suit your architectural preferences.
The cost varies based on technical features and customisation. For a detailed, no-obligation quote, please contact our team today!
Where To Find Us