Aluminium
Aluminium Casement Windows
Our aluminium casement windows from Cortizo combine slim profiles with maximum glass area, flooding your home with natural light. Available in a range of configurations including top-hung, side-hung and fixed, with thermally broken profiles for excellent energy efficiency.
Features & Benefits
Slim Profiles
Maximise glass area for more natural light and better views
A-Rated Energy Efficiency
Thermally broken profiles with argon-filled double or triple glazing
Any RAL Colour
Powder-coated in any colour from the RAL Classic range, inside and out
Low Maintenance
Aluminium doesn't warp, rot or fade — just wipe clean
Secure
Multi-point espagnolette locking as standard
40+ Year Lifespan
Outlasts uPVC and timber alternatives significantly
Our Installations
Technical Specifications
Frequently Asked Questions
What casement window systems do you install?
We install the Cortizo Cor 70 Hidden Sash with 60mm thermally broken profiles and the Schuco AWS 70.HI achieving U-values as low as 0.9 W/m²K. Tilt-and-turn options are also available. Every installation is FENSA registered with a CPA insurance-backed guarantee.
How much do aluminium casement windows cost?
Final price depends on size, specification and glazing options (double or triple). Every installation is FENSA registered with a 10-year CPA insurance-backed guarantee. Request a free no-obligation quote.
Are aluminium windows energy efficient?
Yes — the Schuco AWS 70.HI achieves U-values from 0.9 W/m²K, and the Cortizo Cor 70 Hidden Sash delivers A-rated energy performance with thermally broken profiles.
What colours are available?
Any colour from the full RAL Classic range. Dual-colour options available (different inside and outside).
What guarantees come with your aluminium windows?
All installations are FENSA registered and include a 10-year CPA insurance-backed guarantee, plus manufacturer warranties from Cortizo or Schuco.
More Aluminium Products
Related Guides
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ReviewCortizo Aluminium Windows Review: Cor 70 Hidden Sash & UK Pricing
Cortizo aluminium windows review: Cor 70 Hidden Sash, tilt-and-turn variant, U-values, PAS 24 security, RAL colours, and how they compare to Schuco AWS 70.HI.
ComparisonAluminium vs uPVC Windows 2026: Cost, U-Values, Lifespan Compared
Aluminium vs uPVC windows head-to-head — slim sightlines vs cost, U-values 0.8 vs 1.2 W/m²K, 40+ vs 25-year lifespan, £700-1,600 vs £400-900 per casement.
GuideWhat is a U-Value? Window & Door Energy Ratings Explained
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