Window Conversions · Kempton Park, Johannesburg
Aluminium Window Conversions in Kempton Park, Johannesburg
Onewayglass converts old steel and wooden windows to aluminium for homes, complexes and offices in Kempton Park and Johannesburg. We remove the old frames, fit made-to-measure aluminium windows and make good around the opening – no more rust, rot or yearly painting.
From R4,500 · free written quote
- Trusted since 2010
- Free written quotes
- Made to measure & installed
- Safety glass as standard
Quick answer
How much does a steel-to-aluminium window conversion cost?
Window conversions from Onewayglass start from R4,500 per window, including removal of the old frame, the new aluminium window and installation. Price depends on window size, style, glass and how much making good the opening needs.
Call 083 483 7222 or email [email protected].
- Service
- Aluminium Window Conversions – supply & installation
- Starting price
- From R4,500
- Areas
- Kempton Park, Johannesburg & East Rand
- Phone
- 083 483 7222
- Hours
- Mon–Fri 08:00–17:00 · Sat & Sun closed
- Established
- 2010
Your options
What a window conversion includes
Every unit is made to measure. These are the most common choices our Kempton Park customers make.
Steel to aluminium
Rusted, sticking steel frames are cut out and replaced with aluminium windows sized to the existing opening, keeping building work to a minimum.
Wood to aluminium
Rotten or warped timber windows and doors are removed and replaced with aluminium that never needs varnishing.
Choice of window styles
Top-hung, side-hung casement, sliding and fixed windows – or combine styles to improve ventilation and views.
Making good & sealing
We patch plaster around the frame, seal inside and out, and leave the site clean and ready for a paint touch-up.
2026 price list
Aluminium Window Conversions prices in Kempton Park (2026)
Starting prices for aluminium window conversions from Onewayglass. Every price is a "from" price – your exact price is confirmed in a free written quote.
Aluminium Window Conversions
Per window, supplied & installed- Small window conversion (up to 600 × 900 mm)From R3,200 per windowBathroom and toilet windows, obscure glass available
- Standard window conversion (up to 1.2 × 1.2 m)From R4,500 per windowRemoval of old frame, new aluminium window, installation
- Large window conversion (up to 1.8 × 1.5 m)From R6,500 per windowLounge and bedroom windows with opening sashes
- Whole-house conversion (8+ windows)From R4,000 per windowVolume pricing and one installation schedule
- Window-to-door conversionFrom R12,500Opening cut down and a sliding or hinge door fitted
What affects your price?
Size & panels
Opening width and height and the number of panels or sashes.
Glass type
Clear, tinted, laminated, low-E or double-glazed safety glass.
Frame & colour
Domestic or heavy-duty profiles; standard or special powder-coat colours.
Hardware & locks
Handles, multi-point locks, closers, floor springs and rollers.
Site conditions
Removing old frames, altering openings, access and upper floors.
Starting prices published by Onewayglass, Kempton Park. All prices are "from" guide prices in South African rand; your final price is confirmed in a free, itemised written quote after measuring.
Recent work
Recent windows projects by Onewayglass
Tap any photo to enlarge it. These are real installations by our team.
How it works
From quote to installation in Kempton Park: 4 simple steps
One Onewayglass team manages your project from first call to final handover.
Request a free quote
Call, WhatsApp or send the form with your sizes or photos. We reply with a guide price and book a site visit.
On-site measure
We measure the opening, check lintels, floors and walls, and confirm glass, colour and hardware in a written quote.
Made to measure
Your doors or windows are manufactured to the exact measurements, glazed with safety glass and checked before delivery.
Installation & handover
Our own team installs, seals and adjusts everything, cleans up and shows you how to operate and care for it.
Why Onewayglass
Why Kempton Park homeowners and businesses choose Onewayglass
Trusted since 2010
More than 15 years of glass and aluminium work on homes, complexes, shops and offices in Kempton Park and Johannesburg.
Supply and installation
One company measures, manufactures and installs, so there is one point of accountability.
Safety glass as standard
Doors, low-level and overhead glazing are fitted with toughened or laminated safety glass in line with SANS 10400-N.
Honest starting prices
Published 'from' prices and itemised written quotes, so you know what you are paying for.
Made to measure
Every door, window and shopfront is made for your opening – no fillers, no forced fits.
Residential & commercial
From a single bathroom window to full shopfronts and whole-house conversions.
Our services
Related glass and aluminium services
Often quoted together with this service.
From R12,500Aluminium Folding Glass Doors
Bi-fold and folding-stacking doors that open a whole wall to your patio, garden or entertainment area.
- 3 to 6+ panel configurations
- Toughened safety glass
- Made to measure & installed
From R15,000Aluminium Pivot Doors
Statement aluminium pivot entrance doors, powder-coated to match the rest of your windows and doors.
- Oversized entrance doors
- Powder-coated to any colour
- Sidelights & fanlights
From R8,500Aluminium Sliding Glass Doors
Smooth-running patio and heavy-duty sliding doors that save space and flood rooms with natural light.
- 2, 3 & 4-panel doors
- Domestic & heavy-duty ranges
- Replacement of old sliders
From R18,500Glass Pivot Doors
Full-glass and frameless pivot doors for bright, modern entrances, offices and showrooms.
- Frameless toughened glass
- Full-glass aluminium framed
- Clear, tinted or frosted
Local service
Serving Kempton Park, Johannesburg and the East Rand
Onewayglass has operated from Rhodesfield, Kempton Park since 2010. Being minutes from the R21 and R24 means we reach homes and businesses across Kempton Park, the East Rand and greater Johannesburg quickly for measuring and installation.
Areas we cover
- Kempton Park
- Rhodesfield
- Aston Manor
- Glen Marais
- Birchleigh
- Birch Acres
- Norkem Park
- Bonaero Park
- Pomona
- Bredell
- Edleen
- Van Riebeeck Park
- Terenure
- Esther Park
- Croydon
- Spartan
- Isando
- Edenvale
- Bedfordview
- Benoni
- Boksburg
- Midrand
- Sandton
- Johannesburg
Not sure if we cover your street? Call 083 483 7222 or send your address and we'll confirm.
FAQs
Aluminium Window Conversions FAQs
Straight answers to the questions Kempton Park and Johannesburg customers ask us most.
How much does it cost to convert steel windows to aluminium?
Onewayglass conversions start from R4,500 per standard window, from R3,200 for small bathroom windows and from R6,500 for large windows, with removal and installation included. Whole-house projects start from R4,000 per window.
How long does a window conversion take?
New windows are typically manufactured in 7–14 working days. On site, we usually convert 4–6 windows per day, so most homes are completed in one to three days.
Will my walls be damaged?
We size the new aluminium window to the existing opening and cut the old frame out carefully. Minor plaster patching around the frame is included; you only need to touch up the paint.
Is aluminium better than steel or wood for windows?
Aluminium does not rust, rot or warp, needs no painting and allows slimmer frames with more glass. It costs more upfront than steel but far less to maintain over time.
Which areas do you cover for aluminium window conversions?
Onewayglass is based at 7 Defiant St, Rhodesfield, Kempton Park, 1619 and works throughout Kempton Park – including Rhodesfield, Glen Marais, Birchleigh, Norkem Park, Aston Manor, Bonaero Park and Pomona – as well as greater Johannesburg and the East Rand. Call 083 483 7222 to confirm your suburb.
How do I get a quote for aluminium window conversions?
Call 083 483 7222, email [email protected] or complete the quote form on this page with your sizes or photos. We confirm a guide price, measure on site and send an itemised written quote. We are open Monday to Friday, 08:00 to 17:00.
Free quote
Request a free quote
Tell us about your project and we will reply with a guide price and next steps. Prefer to talk? Call 083 483 7222.
- Monday08:00 – 17:00
- Tuesday08:00 – 17:00
- Wednesday08:00 – 17:00
- Thursday08:00 – 17:00
- Friday08:00 – 17:00
- SaturdayClosed
- SundayClosed
South African time (SAST). Closed on public holidays.
Find us
Onewayglass on the map – Kempton Park, Johannesburg
7 Defiant St, Rhodesfield, Kempton Park, 1619. Call 083 483 7222 before visiting so that someone is at the workshop to help you.