Professional Aluminium Window Installers in Johannesburg & Gauteng
Sigmadoors provides professional aluminium door and window installation and replacement for homes, renovations, developments and commercial projects in Johannesburg, Pretoria and across Gauteng.
We manufacture, supply and install new and replacement aluminium windows in standard and custom sizes. Send us your measurements, photographs, window schedule or architectural plans and we can help determine the right solution for your project.
01
Top Hung Window Installation
Top-hung aluminium windows are popular for bedrooms and bathrooms. Correct levelling and alignment ensure the outward-opening sash operates smoothly and closes properly against the weather seals.
02
Side Hung Window Installation
Side-hung aluminium windows are commonly used in kitchens, bedrooms and living areas. The frame must be installed square and level so the side-opening sash opens freely and seals correctly when closed.
03
Horizontal Sliding Window Installation
Aluminium sliding windows are ideal where outward-opening space is limited. Correct installation ensures the sliding sash runs smoothly along the track, aligns with the interlock and drains correctly.
Aluminium Windows Installed Correctly
Correct installation helps ensure your windows are level, secure, properly sealed and operate as intended. Our aluminium window installers handle new installations as well as the replacement of existing steel, timber and aluminium windows
Supply and Installation of Aluminium Windows
Our supply and installation of aluminium windows service gives you one point of contact for manufacture and installation.
We can assist with:
- New homes and building projects
- Residential renovations
- Replacement aluminium windows
- Custom-made windows
- Commercial projects
- Removal of existing windows where required
- Installation, alignment, fixing and sealing
Aluminium Door & Window Installation for New Homes
For new homes and developments, we can manufacture windows from architectural plans, window schedules or confirmed opening dimensions.
Before manufacture, we confirm the window sizes, opening configurations, aluminium finish and glazing requirements. The completed windows are then delivered and professionally installed.
How Aluminium Window Installation Works
Our typical process is straightforward:
- Send measurements or plans – Provide dimensions, photographs, drawings or a window schedule.
- Confirm specifications – We confirm sizes, configurations, colours and glass.
- Manufacture – Your aluminium windows are manufactured to the agreed specifications.
- Install – Windows are positioned, levelled and securely fixed.
- Seal & check – Perimeters are sealed and opening sashes and hardware are checked.
What Does Aluminium Door & Window Installation Cost?
The cost of aluminium door and window installation depends on the number and size of windows, glass specification, site access, location and whether existing windows need to be removed.
Replacement projects may also require additional preparation around the existing openings.
Send us your measurements, photographs or building plans for a project-specific quotation.
Send Us Your Window Sizes
Aluminium Window Replacement
Old steel, wooden and aluminium windows can be replaced with modern aluminium windows during renovations or property upgrades.
Replacement may be worthwhile where existing frames are damaged, badly deteriorated, difficult to operate or no longer suit the building.
Because existing openings don’t always match standard sizes, we can manufacture custom replacement aluminium windows to suit confirmed dimensions.
Request a Replacement Window QuoteAluminium Window Installation Johannesburg
We provide aluminium window installation in Johannesburg, including Sandton, Randburg, Fourways, Bryanston, Midrand, Sunninghill, Morningside and surrounding areas.
Our service covers individual replacement windows through to complete aluminium window packages for new homes and renovations.
Buy Windows Online
Steel to Aluminium Window Conversions – Minimal Mess
Upgrade old steel windows to modern aluminium windows with minimal disruption to your home. Where suitable, Sigmadoors can carefully remove or cut out the existing steel window sections and install custom-made aluminium replacement windows to suit the existing openings.
This conversion method helps reduce unnecessary breaking of brickwork and plaster, resulting in a cleaner, quicker installation with less dust, rubble and making-good work. The new aluminium windows are securely fitted, aligned and sealed for a neat finished appearance.
Ideal for home renovations where you want new aluminium windows without unnecessary mess.
Request Supply & InstallationAluminium Window Delivery
Aluminium windows are bulky glazed products that require careful transport.
Sigmadoors can arrange delivery for qualifying orders and project locations. Delivery requirements depend on the quantity, window sizes and destination.
For larger projects, windows can be coordinated for delivery according to the construction programme.
Ask About Our Delivery
Aluminium Window Installation FAQs
Can you replace steel or wooden windows with aluminium windows?
Yes. Existing steel and timber windows can be replaced with aluminium windows manufactured to suit the prepared openings.
Do you manufacture custom replacement aluminium windows?
Yes. Custom windows can be manufactured where standard sizes do not suit the existing openings.
Do you supply and install aluminium windows?
Yes. We offer supply and installation of aluminium windows for qualifying projects.
How long does installation take?
It depends on the number of windows, their sizes, site access and whether existing windows need to be removed.
Get a Quote from Aluminium Window Installers
For professional aluminium window installation, aluminium window replacement or supply and installation, send Sigmadoors your measurements, photographs, window schedule or architectural plans.
Sigmadoors — Designed Right. Installed Right.
(+27) 065 841 6248 | info@sigmadoors.co.za