Shop Aluminium Windows
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Aluminium Windows for Modern Homes in South African
Sigmadoors manufactures and supplies quality aluminium windows in South Africa for modern homes, renovations, developments and commercial projects. Choose from top-hung, side-hung, sliding, folding, fixed and custom aluminium window designs, available in standard sizes or manufactured to your measurements and architectural plans.
Our aluminium windows are available in a choice of frame colours and glazing options, with professional supply and installation available in Johannesburg, Pretoria, Midrand and across Gauteng. Standard aluminium windows can also be ordered online with prices displayed upfront.
Shop Aluminium Windows
065 841 6248 – info@sigmadoors.co.za
Quick Quote
Types of Aluminium Windows
Top Hung Aluminium Windows
Opens outward for practical ventilation and weather protection.
Side Hung Aluminium Windows
Opens from the side for maximum airflow and easy operation.
Sliding Aluminium Windows
Slides horizontally for smooth, space-saving ventilation.
Fixed Aluminium Windows
Aluminium Folding Windows
Aluminium folding windows consist of multiple panels that fold and stack to one or both sides of the opening. They create a wide, unobstructed opening and are well suited to kitchens, entertainment areas, patios, serving counters and spaces that connect indoor and outdoor areas.
Custom-Made Aluminium Windows
Sigmadoors custom aluminium windows can be made to your architectural plans or window schedule. Our made-to-order solutions include large feature windows, oversized and floor-to-ceiling glazing, double-volume windows, corner windows and opening combinations, staircase glazing and aluminium curtain walls
Standard or Custom Aluminium Windows?
Sigmadoors offers both standard and custom aluminium windows for new homes, renovations and commercial projects. Standard windows are a convenient choice where common sizes and configurations suit the opening, while custom aluminium windows can be manufactured to your measurements, architectural plans or window schedule.
Aluminium Window Sizes
Aluminium window sizes vary according to the type of window, room, opening and ventilation required. Our range includes compact windows for bathrooms and kitchens, popular bedroom sizes, and larger windows for lounges, staircases and feature areas.
Standard sizes can be ordered online, while made-to-measure aluminium windows are available for non-standard openings. When replacing existing windows, always measure the actual opening carefully rather than assuming the existing window is a standard size.
View Aluminium Window Sizes | Measuring Guide
065 841 6248 – info@sigmadoors.co.za
Aluminium Window Prices
Aluminium window prices in South Africa depend mainly on the window size, opening configuration, aluminium profile, frame finish and type of glass. A small standard top-hung window will generally cost less than a large multi-panel or custom-made aluminium window.
Sigmadoors displays prices on many of our standard aluminium windows, making it easier to compare sizes and configurations before ordering. For custom windows or larger projects, send us your measurements or plans for a quotation.
28mm vs 30.5mm Casement Window System
Not all aluminium windows use the same profile. 28mm and 30.5mm casement systems are both commonly encountered in South Africa, but the profile size influences the appearance and construction of the finished window.
Sigmadoors generally prefers the 30.5mm casement profile for our casement window range. Its more substantial profile gives the window a solid, well-defined appearance while remaining slim enough for modern residential architecture. The appropriate system should always be selected according to the window size, configuration and project requirements.
Shop Aluminium Windows
065 841 6248 – info@sigmadoors.co.za
Colours & Finish Options
Aluminium windows can be coordinated with your home’s roof, doors, exterior paint and architectural style. Popular Sigmadoors finishes include Natural Anodized (Silver), White, Bronze, Charcoal and Black.
Charcoal and black are particularly suited to contemporary homes, while white, bronze and natural anodized finishes work well across both modern and traditional architecture. Colour availability may vary according to the aluminium system and order.
Explore Aluminium Window Colours
065 841 6248 – info@sigmadoors.co.za
Glass Options
Choosing the correct glass is just as important as choosing the aluminium frame. Depending on the application, our aluminium windows can be supplied with clear, privacy, tinted or safety glazing, including options such as Clear, Arctic Snow, S10 Bronze, S10 Grey and S10 Silver.
Glass thickness and safety-glazing requirements depend on the window’s size, position and use. Double glazing can also be considered for compatible window systems where improved thermal or acoustic performance is required.
Compare Glass Options | Learn About Double Glazing
065 841 6248 – info@sigmadoors.co.za
Aluminium Window Supply & Installation
Sigmadoors supplies aluminium windows for new builds, renovations and replacement projects, with professional installation available for projects in Johannesburg, Pretoria and surrounding Gauteng areas.
Our process is straightforward: provide your measurements or plans, confirm the window configuration, colour and glass, and the windows are manufactured to the agreed specification. Professional installation can then be arranged where required.
Get a Supply & Installation Quote
065 841 6248 – info@sigmadoors.co.za
Shop Popular Aluminium Windows
Looking for a standard size? Browse our popular aluminium windows for sale online, including top-hung, side-hung and sliding configurations in commonly used residential sizes.
Each window is supplied as a complete glazed unit with the appropriate glass, handles, friction stays, weather seals and opening sashes, where applicable. For sizes or configurations that aren’t listed online, request a custom quotation.