Casement Windows for South Wales Homes – Secure, Energy Efficient, Stylish

Casement windows are the most popular style in the UK — and for good reason. They are easy to use, provide excellent ventilation, and can be adapted to suit both modern and traditional homes.

At Daimant, we supply and install casement windows across Caerphilly, Cardiff, and South Wales, offering secure, A+ rated glazing with a wide choice of frames, finishes, and configurations. Every installation is FENSA-approved and PAS 24 certified, ensuring your home is both stylish and protected.

What are casement windows and how do they work?

Casement windows are hinged windows that open outward like a door. They can be designed as:

• Side-hung casement windows – hinged at the side, swinging open for maximum airflow.

• Top-hung casement windows – hinged at the top, opening outward to let in air while keeping out rain.

Casement windows are simple, practical, and suitable for all types of homes — from Caerphilly’s modern estates to Cardiff’s suburban houses.

How energy efficient are casement windows?

Energy efficiency is one of the biggest benefits of upgrading to casement windows. Daimant installs:

• A+ rated double glazing with argon-filled units.

• Triple glazing options for maximum insulation.

• Thermally efficient uPVC or aluminium frames with weather seals.

The Energy Saving Trust reports that replacing single-glazed windows with modern casement double glazing can save up to £195 per year in heating costs for a typical South Wales semi-detached property.

How secure are casement windows?

Casement windows are among the most secure styles available. Features include:

• Multi-point locking systems that secure the sash firmly into the frame.

• Child restrictors to allow safe ventilation without fully opening.

• PAS 24 security certification, ensuring compliance with UK standards.

• Optional laminated or toughened glass for extra safety.

Example: In Cathays, Cardiff, rental properties upgraded to casement windows with PAS 24 locks, helping landlords meet security requirements while giving tenants peace of mind.

What design options are available with casement windows?

Every home in South Wales is different. Casement windows can be customised with:

• Colours & Finishes – classic white, modern anthracite grey, black, or timber-look foils.

• Glazing Options – clear, frosted, patterned, decorative, or solar-control glass.

• Frame Materials – uPVC for affordability and low maintenance, aluminium for slimmer, modern sightlines.

• Handles & Hardware – stainless steel, chrome, brass, or matte black.

How much do casement windows cost in South Wales?

Prices vary depending on material, size, and glazing:

• uPVC Casement Windows – from £350–£600 per window.

• Aluminium Casement Windows – from £500–£800 per window.

While uPVC is the most budget-friendly, aluminium is preferred for contemporary Cardiff properties where slim, modern designs are in demand.