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As the focal point to every home, make a bold statement with an exquisite aluminium door from Gaster Aluminum. Designed to complement the window range, an amazing selection of high-security robust doors are available.

Anything from a functional rear door, French doors to open up a patio or balcony area to a range of bespoke entrance doors complete with a choice of designer stainless steel handles and feature panels. The choices and colours are practically endless.

Our wide range of doors are applicable to the architectural, commercial, domestic and retail markets. The doors available are tilt and slide, slide folding, commercial hinged, commercial swing, patio, multi-track slide and automatic. Doors are designed for use as open out or open in, single or double doors, internally or externally beaded with sidelight options for domestic and/or commercial applications.

High security glazing, locking mechanism including security deadlock and hook bolts, dual colour options, excellent weather performance are some of the many special features of our door systems.

Our Entrance Doors has been expertly crafted to deliver everything you need in terms of style, security, performance and quality. A range of innovative aluminium doors designed and made in South Africa, are available in a wide range of designs and colours suitable for any property.

Our patio doors are suitable for use as either sliding commercial entrances where large opening apertures are necessary, or as perfect domestic sliding doors that maximise light and give spectacular views.

They are designed to combine strength and performance while being visually striking. Utilising double and triple track outer frame options, many configurations using two, three, four and six panels can be specified to best suit your requirements, maximising the potential to bring light & space to any property.

Sliding Patio Doors are a great alternative to French doors, as well as being a simple and cost-effective alternative to Bifolding Doors. Our aluminium patio doors are designed to be both secure and aesthetically pleasing and are available in a wide range of colour finishes.

Our sliding patio doors are constructed from profiles with a thermal break. Robust sections enable the creation of large passage-ways providing maximum natural light and panoramic views. Moveable panels that slide to the left or rights sit within an outer frame and are available in a huge range of powder coated paint colours and finishes. 

Our doors are also suitable for use with AUTO SLIDE opening mechanisms (sold as per request).

A patio roof in the garden does not just mean additional living space, it means more usable outside space for more of the year. When the sun out the patio becomes the perfect entertaining space and adding a patio roof extends the amount of time you can make use of the garden and protects you from the elements. Adding a roof over your patio also allows you to make best use of your outdoor space in spring and into autumn.

Our Bi-folding doors offer impressive opening apertures that can unite internal and external areas creating rare living and social areas. Ideal for both residential and commercial applications.

In domestic applications, they can be used as either an alternative to sliding doors or to open up an entire wall as part of a conservatory; the system will make the most of an immaculate view or bring a garden into the home.

Used commercially in a bar, café or restaurant, they can create a glazed screen that allows in the maximum ingress of light in inclement weather, and will also easily glide to open up an entire wall in warmer weather. We have wide choice of opening configurations to suit any application. Choose to fold the sashes internally or externally, place the opening at the side so the sashes all fold one way, at one end, to create a single entrance door for easy access, or in the middle to give the option of a double door.

Our bi-folding doors, are an innovative product and aluminium is, without a doubt, the perfect material for the manufacture of bi-folding doors. It’s strength to weight ratio is unparalleled, it won’t expand or contract in extreme temperature conditions, and it is virtually maintenance-free. Our Bi-folding doors can be powder coated to practically any colour.

Bifolding doors, are now very popular and have now become recognised as a fundamental feature when designing new-build homes, extensions or even in renovation projects. There are many reasons for this rise in demand and they relate to versatility, space saving, increased natural light and being able to bring your outside inside, with a flush floor level.

Our Commercial Doors and Screens are a proven system designed to meet the demands of various stakeholders in construction projects.

This is a modular screening system that can be rapidly assembled on site. Designed for the African climate, fixings on the screens are manufactured from corrosion resistant material to provide protection from both atmospheric and electrolytic degradation. The system offers drainage trays, ensuring the screen’s performance in all weathers.

Our range has been designed to be robust and durable in high traffic areas whilst also slim-looking with sightlines of just 50mm.

Gaster aluminium windows are all about slim, elegant sight lines to provide the look and feel you require. Combine this with the latest thermal technology and high-performance glazing then aluminium windows become the obvious choice to give any home that ‘architectural look’

Our Aluminium windows are highly resistant to corrosion and rust whilst offering strength and durability.  They are maintenance free, built to last and above all, a premium product.  Aluminium is extremely recyclable and very environmentally friendly – its lifespan is measured in decades instead of just years.

Our Aluminium Windows also allow you to have your windows coloured in any many colours.  It is even possible to have your windows manufactured to have alternate colours on the inside and out. 

This versatile range of profiles can provide many solutions for residential and light commercial applications. It can create traditional casement windows inspired by the elegance and styling of timber products, or contemporary style windows designed for modern homes or offices.

It is rare for Aluminium frames to rot, rust, peel or flake, making them maintenance free. We offer our windows with a 10-year guarantee for your peace of mind – making them a noble investment.

We manufacture and supply a range of glass roof lanterns and rooflights which are all designed to let natural light flood in from above, suitable for flat roofs. Perfect for creating that ‘architectural feel’ and giving the feeling of extra volume and dimension to any room.

Whether you are replacing an existing roof or are in the process of building a new extension, a lantern roof is an ideal way to draw more light into your room. Our lanterns offer exceptional benefits, unmatched by any other roof on the market. The internal and external design complements our ranges of aluminium doors and windows.

This intriguing design creates a feeling of more sky and less roof – giving you visible elegance to your roof design and appearance.

With a wealth of experience, Gaster Aluminium can help you with all aspects of your balustrading project, including balconies and staircases.

We are experts in design, supply and installation of a stunning range of balustrade systems including:

  • Stainless Steel Balustrade Systems
  • Glass Balustrades
  • Steel and wire rope infill Balustrades
  • Frameless Glass Balustrades
  • Semi Frameless Glass Balustrades
  • Bolted Glass Balustrade Systems

Indoor or outdoor, commercial or domestic and regardless of budget we have a variety of stunning bespoke choices.

At Gaster Aluminium, we can assist you to select the best solution. Our experienced and dedicated team is always at hand to ensure that you get quality balustrades for any project.

We work closely with:

  • DIY homeowners who need advice on selecting the right components
  • Sub-contractors who require a modern balustrade system for their clients
  • Main contractors looking for reliable balustrade sub-contractors
  • Architects that need advice planning the balustrade designs

Gaster Aluminium offers clients a bespoke design, manufacture and installation service using high grade, toughened shatterproof glass. Everything is tailored to your exact requirements and complemented with a sophisticated range of superior quality fixtures and fittings, giving you complete freedom of bathroom design.

Whether you’re a trade customer, delivering a large commercial project or it’s for your own residence we take the greatest care when measuring, designing and fitting your frameless glass showers in your bathroom.

We pride ourselves in not only delivering a great quality product but also in giving unattainable level of customer service at every stage. We stand behind the quality of our products so we offer you 10 years of assurance on your frameless glass.

Gaster Aluminum also specialize in glass application for Commercial and domestic projects. We are experts in balustrades, shower units and all glazing requirements. Our strategic location allows us to service Architects, Builders and Interior Designers in South Africa. Our education in the glazier profession & hands on experience ensures we provide services with greatest precision, attention to detail and workmanship of the highest quality and reliability.

Gaster Aluminium offer a wide range of fixed security grilles and retractable security grilles for shopfronts and commercial establishments. Our range also includes stacking security grilles, retractable security gates for internal and external applications as well as retractable window bars designed to offer a high level of security while maintaining the aesthetic.

See our image gallery on the Portfolio Page for pictures.

Wooden window frames almost always need to be painted, stained, or otherwise treated after or during installation. That’s because of wood, being a once living substance, is susceptible to weathering or warping after some time. If it is not treated and properly cared for, it is likely that your wooden window frames will lose a lot of their lustre and aesthetic appeal.


This is where we come in. Gaster Aluminium is able to change all the wooden windows on your property and replace them with aluminium windows. We recommend this because unlike wooden windows, aluminium is the most cost-effective option for South African window frames and doors, it does not rot, unlike wooden window frames and doors; and also aluminium is practical and essentially maintenance free.

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