High‑performance window systems designed for security, efficiency and lasting style

West Cornwall Plastics supplies a wide range of PVCu and aluminium window systems suitable for residential and commercial applications. Designed to meet modern performance standards, our windows combine strong security, excellent thermal efficiency and low‑maintenance durability with a choice of styles, profiles and finishes. Whether for new builds, replacements or bespoke projects, our window range offers flexible solutions that complement both traditional and contemporary properties.
PVCu Casement Windows

Our PVCu casement windows are manufactured in the South West using the 70mm Optima system from Profile 22.

Our standard specification is ‘A’ rated, but this window can achieve an A++. Which means we can achieve target U-values of 1.2 W/m²K

Available in the Optima range of colours, grained effect finishes, or any colour using our WestCoat paint system.

All hardware on the windows is Stainless Steel making them ideal for the West Cornwall climate.

PVCu Sliding Sash Windows

Our PVCu sliding sash windows are available with or without run-through horns and deep bottom rails.

Astral Georgian bar options, with toughened glass standard in the lower pane.

Available in the Optima range of colours, grained effect finishes, or any colour using our WestCoat paint system.

Our vertical slider range of windows all comply to the lastest security requirement PAS24:2016 enhanced Security, or Secure Windows for Document Q.

PVCu Tilt & Turn Windows

Our PVCu tilt and turn windows are manufactured in the South West using the 70mm Optima system from Profile 22.

Our standard specification is ‘A’ rated, but this window can achieve an A++. Which means we can achieve target U-values of 1.2 W/m²K

Available in the Optima range of colours, grained effect finishes, or any colour using our WestCoat paint system.

Our tilt and turn range of windows all comply to the lastest security requirement PAS24:2016 enhanced Security, or Secure Windows for Document Q.

PVCu Flush Casement Window

Our Optima PVCu flush casement windows are designed to look like traditional timber casement windows.

Our standard specification is ‘A’ rated, but this window can achieve an A++. Which means we can achieve target U-values of 1.2 W/m²K

Available in the Optima range of colours, grained effect finishes, or any colour using our WestCoat paint system.

Our tilt and turn range of windows all comply to the lastest security requirement PAS24:2016 enhanced Security, or Secure Windows for Document Q.

Monkey Tail handles are also available.

Aluminium Casement Windows

Our Aluminium casement windows are available in two profile systems, where we use the best option for your location.

Our standard PPC paint finish is approximately 60 microns thick and has a marine-grade guarantee.

Available in any colour. Fir Green is shown.

Our casement range of windows all comply to the lastest security requirement PAS24:2016 enhanced Security, or Secure Windows for Document Q.

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