🏠Aluminium Windows 🚪Aluminium Doors 🪟Sliding & Bi-Fold Systems 🌡️Energy Efficient Solutions 🌧️Weather Resistant Frames 🛠️Custom Made to Measure 🎨Modern & Slimline Designs 🔒High Security Locking Systems 🏢Residential & Commercial Projects ♻️Low Maintenance & Long Lasting 🇬🇧UK Manufactured Quality 📞Get a Free Quote Today
🏠Aluminium Windows 🚪Aluminium Doors 🪟Sliding & Bi-Fold Systems 🌡️Energy Efficient Solutions 🌧️Weather Resistant Frames 🛠️Custom Made to Measure 🎨Modern & Slimline Designs 🔒High Security Locking Systems 🏢Residential & Commercial Projects ♻️Low Maintenance & Long Lasting 🇬🇧UK Manufactured Quality 📞Get a Free Quote Today
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Alitherm Range

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Designer door 5
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Proven Reliability

GB Trade Alitherm 400

The G.B Trade Aluminium Alitherm 400 Window combines timeless aesthetics with advanced thermal performance. Perfect for both new build and refurbishment projects, it brings clean, contemporary styling and superb energy efficiency to any property.
Price Starting From +

Single pain £450

Dual Pain £800

Color Choice +

White, Black, Grey, Custom Colors

Energy Performance +

High energy efficiency with insulated glass options.

Size Min - Max +

Min: 600mm | Max: 3000mm

Standard Windows

  • Outward opening, top-hung or side-hung options for classic versatility.
  • Slim frames maximise light and modern appearance.
  • Excellent weather performance and thermal insulation.
  • Ideal for residential and light commercial installations.

Flush Windows

  • Sashes sit neatly within the frame for a smooth, minimalist look.
  • Perfect for heritage or modern homes wanting a seamless finish.
  • Enhanced thermal efficiency with fully weather-sealed design.
  • Available in matching door systems for consistent aesthetics.

Tilt & Turn Windows

  • Sashes sit neatly within the frame for a smooth, minimalist look.
  • Perfect for heritage or modern homes wanting a seamless finish.
  • Enhanced thermal efficiency with fully weather-sealed design.
  • Available in matching door systems for consistent aesthetics.

Why Choose Precision Aluminium Designer Doors

Discover the perfect balance of style and substance with our Designer Door collection, built on Smart’s proven aluminium platform. Each door blends robust construction with exceptional thermal efficiency and security, offering U-values as low as 0.9 W/m²K and a full range of PAS 24 security options.

Choose from an extensive library of contemporary panel designs, glazing configurations, and luxurious hardware finishes — all precision-built to your exact specifications. Every Designer Door is made to measure, factory-finished, and engineered for decades of trouble-free performance.

Effortless Quoting & Installation

Our streamlined quoting system makes choosing and ordering your Designer Door simple. From initial concept to installation, our team manage every step with clarity and care. Each door arrives pre-hung and aligned for rapid fitting, backed by expert technical support via phone or WhatsApp whenever you need it.

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    Sleek Sightlines & Design Flexibility

    Available in a wide range of colours, textures, and panel options, the Precision Designer Door allows full creative control. Add sidelights, toplights, or contrasting finishes to complement your home’s architecture. With slim sightlines and integrated sealing systems, these doors deliver lasting elegance and weather-tight performance.

    Fast Lead Times & Reliable Support

    Expect quick delivery, accurate fabrication, and consistent aftercare — ensuring every Designer Door installation is seamless from start to finish.

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    Why G.B Trade Aluminium?

    Powder Coated

    The powder-coated exterior of our aluminium doors not only offers a wide range of colours, but also provides a thicker, smoother, and more durable finish compared to standard coatings, ensuring long-lasting beauty and resilience in every climate.

    Multiple Colours

    We offer over 150 colours in matt, satin, or gloss, with the flexibility to choose different shades inside and outside for a completely customised finish that complements your home’s style perfectly.

    Low Maintenance

    From weather-resistant powder-coated aluminium to precision-engineered bearing-guided rollers, every detail is carefully designed to minimise upkeep and ensure your doors remain reliable, easy to use, and low maintenance throughout years of daily living.

    Frequently Asked Questions ?

    Who are Precision Aluminium ?

    Precision Aluminium is a UK-based specialist in high-quality aluminium solutions for homes and businesses. We combine expert craftsmanship with precision engineering to deliver exceptional results.

    We are located in Newtown, Cheshire serving customers across Greater Manchester, Cheshire, Lancashire and Derbyshire.
    Yes, we provide aluminium solutions for homeowners, builders, architects, and commercial property owners.

    Yes, we provide aluminium solutions for homeowners, builders, architects, and commercial property owners.

    Yes, we provide free, no-obligation quotes tailored to your requirements.

    Absolutely. We can work with you to refine your design ideas, recommend the best aluminium solutions, and ensure everything meets building regulations.

    Simply contact us via phone, email, or our online form and we’ll arrange a consultation to discuss your project.

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