Stylish and secure Casement windows

Our Casement Windows are a great option for any home. Designed to complement any project, our extensive range includes sculptured or bevelled frames along with our exclusive Slimline System. Security, Heat loss and Sound insulation are key features on all our casement windows ensuring your home will be Safer, Warmer and Quieter. Whether you are considering uPVC, Aluminium or Timber effect, our extensive range can be adapted for a Traditional or Contemporary look.

The term casement was originally applied to a side hinged window with a casement stay, top hinged windows were often referred to as awning windows, today casement is often a generic term used for opening out windows although with modern friction hinges the casement stays have become a thing of the past.

Firmseal classic Casement windows tailor made to virtually any size and fitted to the highest possible standards.

Casement Windows
Jump to:

Make your beautiful home even more special

Imagine the difference you’ll see with new windows that perfectly match the colours and style of your beautiful home.

The Firmseal team is experienced and trained to install to a high standard and only use the highest quality materials to ensure your casement windows achieve thermal efficiency, long lasting durability and are finished to a superior standard.

Casement Windows
Your fitter was friendly and brill at his job.
Mrs G.D. – Patio Doors, Merriott
Excellent product & better value for money than competitor brands
Mr & Mrs T – Alitherm, Yeovil
everything went smoothly from start to finish.
Mrs M – Windows, Yeovil
Contact Us

Request your free quote

Kindly submit your enquiry using the form below

Want to find out more?

Get in touch for a pressure-free chat