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The Best Window Installers in Johannesburg

Credibility – We prefer window installation service providers that have a good reputation in the industry, are licenced and are insured. We gauged their expertise based on their wealth of experience and the competence of their staff.

Workmanship – Workmanship is also one of our priorities, so we made sure to check previous projects and assessed the overall quality of their work.

Pricing – To ensure that clients get value for their money, we always look for a balance between quality and pricing.

Service Excellence – The window installers we selected provide exceptional customer service, communicate clearly, and respond promptly to clients’ inquiries

1. NST Auto Glass


Address: 70 Webber St, Selby South, Johannesburg, 2001, South Africa

Contact Details:  +27 76 411 5634

Operating Hours: Monday – Friday 8:00 AM – 5:00 PM, Saturday 8:00 AM – 2:00 PM

Google reviews score4.2/5 reviews score3.8/5
Total reviews4.6/5
Score consistency4/5
Staff Competence4.5/5
Pricing(A higher score means better value)4.3/5
Service Excellence4.25/5


  • Boasts 18 years of experience
  • Manufactures and installs glass windows even for vehicles
  • SABS-approved products


  • Reports on substandard workmanship
  • Delayed servicing

NST Auto Glass was established in 2005 and has since grown to become one of the leading auto glass service providers in the region. What’s unique about this company is they specialise in manufacturing, installing, and repairing glass windows for vehicles.

But they’re a versatile company, which is why we included them on our list. Aside from vehicle windows, they also install aluminium frames for doors, windows and showers.

They also supply and install other home and office fixtures like sliding doors, folding doors, mirrors, security windows, and more.

We also value how NST Auto Glass is committed to delivering high-quality products. Their windscreens, autoglass, and windows are all approved by the South African Bureau of Standards (SABS).

It’s also a big plus for us that the company’s team of skilled technicians has years of experience in the industry. They are also trained to handle all types of vehicles, from passenger cars to commercial trucks, as well as various window types and designs.

NST Auto Glass’ staff are knowledgeable, eager to help, and committed to the projects they’re handling, which we commend. It’s worth mentioning, though, that there is a handful of reports citing substandard workmanship.

That said, management promptly assisted the client who had concerns, which is a green flag for us.

Nonetheless, we also heard minor complaints about NST Auto Glass’ delayed services. We’re told some of their past clients were bummed after the team didn’t show up on-site as previously scheduled, which can be discouraging.

2. Delarey Welding


Address: 33 Banfield Rd, Industria North, Roodepoort, 1701, South Africa

Contact Details: +27 11 673 6603

Operating Hours: Monday – Friday 7:00 AM – 4:30 PM

Google reviews score4.9/5 reviews score5/5
Total reviews5/5
Score consistency4.9/5
Staff Competence4.6/5
Pricing(A higher score means better value)4.5/5
Service Excellence4.45/5


  • Has over two decades’ worth of experience
  • Commended for superb workmanship
  • High-quality products


  • Poor after-sales
  • A few reports on overcharging

Delarey Welding is an established welding and fabrication company that offers a range of services, including window installation. 

One of this company’s strengths is its strong reputation, boasting more than two decades’ worth of experience. We really commend how they have a solid track record of providing high-quality welding and fabrication services to customers in the area.

We also love that Delarey Welding’s window installation services aims to provide customers with high-quality windows that are durable, energy-efficient, and aesthetically pleasing. 

It’s a plus for us that the company offers a wide range of window styles and designs to choose from, including aluminium and steel frames, as well as glass options such as clear, tinted, and frosted glass.

Delarey Welding’s team of experienced technicians works closely with customers to determine their specific needs and preferences and then provides customised solutions to meet those requirements. 

The company’s commitment to quality is evident in the use of high-quality materials and expert craftsmanship in every installation project.

We also love that they also offer value-added services, making home improvement easier for clients. In addition to window installation services, they also offer a range of other welding and fabrication services, including gates, balustrades, and fencing. 

Our only concern is Delarey Welding’s poor after-sales services. We’re told multiple of their previous clients found it difficult to get the shop’s support for follow-up requests and repairs for their work, which is disappointing.

3. Active Glass & Aluminium


Address: 180 Main Rd, Newlands, Johannesburg, 2092, South Africa

Contact Details: +27 11 477 6490

Operating Hours: Monday – Friday 7:00 AM – 4:30 PM

Google reviews score4.2/5 reviews score4.2/5
Total reviews4/5
Score consistency4.2/5
Staff Competence4.6/5
Pricing(A higher score means better value)4.5/5
Service Excellence4/5


  • Established in 1983
  • Reputable supplier across Gauteng and surrounding provinces
  • Technical staff are experienced and accommodating
  • Equipped with cutting edge technology
  • Experienced in handling different types of windows


  • Poor client communication
  • Complaints about tardiness

Active Glass & Aluminium is not your average glass and aluminium company; it’s a team of passionate experts who have been providing superior quality glass and aluminium products and installation services since 1983. 

They started out as a small, local business but grew to be one of the leading suppliers of high-quality glass and aluminium products and installation services in Gauteng and even surrounding provinces. This speaks volumes of their credibility.

Active Glass & Aluminium specialises in the manufacturing and installation of various types of windows, including sliding, casement, and bay windows, among others.

We’re quite impressed that the company’s expert team of technicians has years of experience and is trained to handle all types of window installation projects, both large and small.

What sets Active Glass & Aluminium apart from its competitors is its commitment to using only the best materials and cutting-edge technology to ensure that products and installations are not only aesthetically pleasing but also durable and energy-efficient.

We also admire how their dedication to customer satisfaction seems to be largely unrivalled, with many satisfied customers returning for repeat business. Apparently, they go above and beyond to provide customised solutions for its customers.

However, we’re a bit iffy after hearing a bunch of reports about the team’s repeated tardiness. 

In addition, we also think Active Glass & Aluminium needs to improve on their client communication, especially when entertaining new or potential clients. Some complain how it’s difficult to get hold of the shop’s representatives, which isn’t ideal. 

4. Corner Star Screens


Address: 1a, 35 Radio St, Alberton, Johannesburg, 1449, South Africa

Contact Details: +27 11 027 4854

Operating Hours: Monday – Friday 8:00 AM – 4:30 PM

Google reviews score4.7/5 reviews score4.8/5
Total reviews4.2/5
Score consistency4.7/5
Staff Competence4.6/5
Pricing(A higher score means better value)4/5
Service Excellence4.6/5


  • Renowned as one of the leading service providers in the area
  • Has a strong business reputation
  • Well-staffed with experienced technicians
  • Only uses highest-quality materials
  • Offers personalised services


  • Limited to window screens
  • Pricey

Corner Star Screens is a Johannesburg-based company that specialises in providing high-quality insect screens and security doors for residential and commercial properties. 

If you’re worried about insects and pests going in your windows, we think they’re the perfect company to call.

Since 2006, the company has been one of the leading providers of window installation services in Johannesburg, with a loyal customer base that continues to grow.

Corner Star Screens’ team of experienced technicians has the knowledge and expertise to handle all types of window installation projects, including the installation of insect screens, security doors, and window frames. 

We also appreciate how Corner Star Screens uses only the highest-quality materials to manufacture and install its products, ensuring that they are both durable and long-lasting.

In addition to its window installation services, Corner Star Screens also offers a range of other home improvement services, including the installation of retractable awnings, clear burglar bars, and roller shutter doors. 

We love how Corner Star Screens prides itself on providing personalised service and attention to detail, ensuring that each customer’s needs are met to their satisfaction. 

Aside from their limited selection of window options, our only issue with Corner Star Screens is their pricey rates for their services. However, considering the quality of their products and their workmanship, we think their services are worth the extra buck.

5. Southern Glass


Address: 240 Turf Rd, La Rochelle, Johannesburg South, 2190, South Africa

Contact Details: +27 11 435 3746

Operating Hours: Monday – Friday 8:00 AM – 4:30 PM

Google reviews score4.5/5 reviews score4.5/5
Total reviews4.7/5
Score consistency4.5/5
Staff Competence4.6/5
Pricing(A higher score means better value)4.6/5
Service Excellence4.6/5


  • Has over 30 years’ worth of expertise
  • Competitive prices
  • Offers a wide range of tailored services
  • Equipped with top-grade materials and tools
  • High-quality windows


  • More focused on glazing services
  • Limited window type options

And finally, we have Southern Glass, a reputable glass manufacturing and installation company that’s known for their exceptional glass products and window installation services to residential and commercial customers since its establishment in 1989.

The company’s forte is in the manufacturing and installation of a wide range of windows, including sliding, casement, and fixed windows, among others. 

Although they’re more focused on glazing services, with their team of experienced technicians and state-of-the-art equipment, we like how Southern Glass can handle both large and small window installation projects with ease.

We also commend how Southern Glass is dedicated to using top-grade materials in the production of its goods to guarantee that its windows are not only visually appealing but also long-lasting and energy-efficient.

The company’s windows are also designed to enhance the appearance and functionality of any property, providing a secure and comfortable environment for its customers, which is another plus for us.

We also selected Southern Glass for its devotion to delivering tailored services and focusing on the minutest details to guarantee that every client’s requirements are met with contentment. .

Take note, though, that Southern Glass’ selection of window types and designs is limited compared to its competitors. 

6. Go Glass and Aluminium


Address: Shop no, 43 Clarendon Dr, Discovery, Roodepoort, 1709, South Africa

Contact Details: 011 672 1630  –  082 959 8397 –  078 850 9567 | [email protected]

Operating Hours: Monday – Friday 8:00 AM – 5:00 PM | Saturday: 8:00 AM – 1:00 PM

Google reviews score4.3/5
Facebook reviews score4.3/5
Total reviews4.3/5
Score consistency5/5
Staff Competence4.5/5
Pricing(A higher score means better value)5/5
Service Excellence4/5


  • Serve both residential and commercial markets
  • Member of SAGGA (South African Glass and Glazing Association)Serve both residential and commercial markets
  • Has been in the industry for 34+ years


  • Limited staff

Go Glass and Aluminium is a family-owned business established in 1989, and over the years, they have built a reputation for providing quality glass and aluminium windows and doors, showers, mirrors, and shopfronts at an affordable price.

What’s great about them is that they serve both residential and commercial markets, and their services include custom design, fabrication, and installation.

One of the pros of working with Go Glass and Aluminium is their focus on quality. They are a proud member of SAGGA (South African Glass and Glazing Association), and, unlike others, they manufacture and install all their products according to the relevant South African Building Regulations.

They only use Wispeco “Crealco” products that are specified per the Architectural plans provided, and all their employees have extensive experience in fabrication and installation. With these measures in place, customers can be assured that they will receive quality products and services.

Aside from these, we like that they have more than enough experience with big commercial projects. They have worked on repairs and replacement of shopfronts and doors for reputable companies such as Clicks, Shoprite, Woolworths, Burger King, Total, and Village Square.

On the downside, one potential con of working with Go Glass and Aluminium is that they are a family-owned business, which means that they may have limited resources and manpower compared to larger companies. However, they do work with Wispeco-approved materials and bring in additional staff when needed to deliver a complete project.

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