Belfast Bifolds & Aluminium Systems design, supply, and install high-performance aluminium windows across Belfast, Antrim, and the wider region — combining sleek, contemporary looks with the strength and thermal performance modern homes need.
Searching for aluminium windows that Northern Ireland homeowners can rely on through wind, rain, and everything else the local climate throws at them?
Aluminium has become the material of choice for windows in Northern Ireland, and it's easy to see why. It's stronger than uPVC, slimmer in profile, and doesn't warp, rot, or discolour over time. Paired with a thermally broken frame and high-performance glazing, an aluminium window gives you narrow sightlines, maximum glass area, and excellent insulation — all in one system.Whether you're renovating a period property, building new, or simply replacing draughty old windows, we supply a full range of aluminium window styles to suit every home.
cASEMENT WINDOWS
It is not always possible to tell the difference between casement and tilt and turn windows. However, the major difference between them is how they open; whilst casement windows always open outwardly, tilt and turn windows can either be tilted slightly inward or opened completely into the home. Contact us to discuss which is best for you.
- Classic hinged design that opens outward for maximum ventilation control
- Slim aluminium frames maximise glass area and let in more natural light
- Simple, reliable operation with a clean, versatile look that suits almost any property
- Available in a wide range of colours and finishes to match your home's style
TILT & TURN WINDOWS
Casement windows swing outward on side or top hinges, offering a traditional look and simple operation. Tilt and turn windows swing inward like a door or tilt open from the top for secure ventilation.
- Dual-opening function: tilt inward from the top for gentle background ventilation, or turn fully inward for easy cleaning and full opening
- Ideal for upper floors, bathrooms, and bedrooms where secure ventilation matters
- Multi-point locking as standard for enhanced security
- Practical, easy-clean design that's popular in both modern and family homes
Why Use Belfast Bifolds & Aluminium Systems
Denouncing pleasure and praising pain was born and will give you a complete account of the system expound actual teachings of the great explorer of the truth.
Clear quotes with no hidden costs, so you know exactly what you're paying for.
From frame colour to glazing specification, every window is configured to suit your property, your opening, and your budget.
Every window is fitted by experienced installers to precise technical standards, ensuring a weathertight, well-sealed finish.
We work with high-performance, thermally broken aluminium profiles built for durability and energy efficiency, not budget alternatives that fail early.
Energy Ratings
Belfast Bifolds & Aluminium Systems utilise best practice and the most energy-efficient materials and products available, as well as our committment to sustainability.
- All our aluminium windows are available with thermally broken frames, which stop cold and heat transferring through the metal
- High-performance double and triple glazing options achieve strong Window Energy Ratings (WER), helping reduce heat loss and lower your energy bills
- Low U-values across our range mean better insulation and a warmer home through the winter months
- Choosing a well-rated window is one of the most effective ways to improve your home's overall EPC performance
