Aluminium Windows for Extensions: Planning and Design Guide
Let’s be honest – planning an extension is equal parts exciting and overwhelming. You’re dreaming about that extra space, the natural light flooding in, maybe...
Enhanced security as standard on all products
Thermal performance exceeding Building Regs
Standard delivery. 4–6 weeks bespoke.
Any RAL colour. Dual-colour available.
We select the optimal system for each application — Cortizo, Smart Systems, and Aluprof — rather than pushing a single manufacturer's range.
At Direct Trade Windows, we manufacture a wide range of premium aluminium products from Cortizo and Smart Systems, with Aluprof for specialist fire-rated applications.
Unlike competitors tied to a single system house, we select the optimal system for each project — whether that's Cortizo Cor Vision for ultra-slim sliding doors or Alitherm Heritage for heritage steel-look replacements.
About Us
Let’s be honest – planning an extension is equal parts exciting and overwhelming. You’re dreaming about that extra space, the natural light flooding in, maybe...
Aluminium windows have absolutely smashed it in 2026, and honestly? It’s not hard to see why. Gone are the days of clunky frames and sky-high...
Choosing window colours is one of those decisions that can either elevate your home’s appearance or quietly undermine it. Get it right, and your windows...