5 Best Window Companies in Johannesburg (2026)

Independently ranked by our review of ratings, reviews and reputation · How we chose

By Brad Smith, Home Services Expert · ✓ Data verified July 2026 · 8 min read

A cracked pane, a sliding door that won't budge, or a whole house of old steel-frame windows you finally want gone: Johannesburg has no shortage of glass and aluminium companies promising to fix it. Few actually show up on time and leave the finish looking right. We compared the window companies across Gauteng with the strongest public track record and ranked them here.

Short answer: Alu Decor Glass Solutions leads with 4.8 from 173 reviews, the most reviewed window company in Johannesburg and over 15 years installing aluminium doors, windows, and glass across the city, Midrand, Centurion, and Pretoria. Close behind, Ubuntu Aluminium & Glass (4.9, 147 reviews) posts the highest rating of the group on fast repair work, while K Parker Joinery brings 28 years of custom wooden window craftsmanship for a different look and budget.

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1. Alu Decor Glass Soluti…
2. Ubuntu Aluminium & Gla…
3. Southern Glass
4. SA Bullet Resistant Gl…
5. K Parker Joinery Woode…
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The Shortlist: Johannesburg Window Companies, Side by Side

#	Business	Rating	Reviews	Best for
1	Alu Decor Glass Solutions	4.8 ★	173	Overall / most reviewed	View ›
2	Ubuntu Aluminium & Glass	4.9 ★	147	Fastest emergency repairs	View ›
3	Southern Glass	4.5 ★	72	Budget glass and mirror repairs	View ›
4	SA Bullet Resistant Glass / Vehicle Armour	4.7 ★	42	Specialty security glass	View ›
5	K Parker Joinery Wooden Doors and Windows	4.3 ★	52	Custom wooden windows and doors	View ›

5 Best Window Companies in Johannesburg (2026)

Our top picks, reviewed

#1 Overall🕑 Open 6 days/wk

Alu Decor Glass Solutions

4.8173 Google reviews

Alu Decor Glass Solutions is a Benrose-based manufacturer that has spent over 15 years installing aluminium doors, windows, and frameless glass systems across Johannesburg, Midrand, Centurion, and Pretoria. The company manufactures locally and handles everything from sliding doors and patio enclosures to SPC flooring, positioning itself as a full aluminium-and-glass outfit rather than a single-product installer. Its site notes work is manufactured locally and installed with care, backed by a guarantee on quality.

What people praise

4.8 average across 173 reviews, the highest review volume on this list
Praised for skilled glass enclosure work, including curved and custom shapes
Customers highlight the team stepping in on short notice when other suppliers fell through
Serves a wide radius: Johannesburg, Midrand, Centurion, and Pretoria

Worth knowing

One detailed review describes a multi-week project with scheduling delays and poor sequencing between sales, engineering, and installation, though the reviewer was satisfied with the final result

Reputation scorecardrank in Johannesburg

Rating4.8 / 5

Review volume173 · 97th

Confidencemoderate

Recency3 months ago

Info completenesssite · phone · hours

Rating breakdown90% 5-star

✓ VerifiedSource: Google

Our take: It has the deepest track record here and the broadest service area, so it's the safe first call. Just build in some schedule buffer for larger, multi-room jobs.

Website +27104481398 Directions

Unit 5 B, 68 Raebor Rd, Benrose, Johannesburg, 2094

#2🕑 Open 6 days/wk

Ubuntu Aluminium & Glass

4.9147 Google reviews

Ubuntu Aluminium & Glass is a Johannesburg outfit specializing in sliding and folding door repairs, glass replacement, and custom aluminium installations, alongside window tinting for homes, offices, and cars. Its site emphasizes fast response, including on public holidays, and the team is run by a manager customers repeatedly name as Sugar. The company positions itself around reliability and speed rather than being the biggest operation in the city.

What people praise

4.9 average across 147 reviews, the highest rating of the group
Repeatedly praised for responding on short notice, including a public holiday callout
Reviewers describe the team as professional, tidy, and quick to explain the fix
Reasonable pricing noted by multiple reviewers, including one who called it half the price of competitors

Reputation scorecardrank in Johannesburg

Rating4.9 / 5

Review volume147 · 92th

Confidencemoderate

Recency5 months ago

Info completenesssite · phone · hours

Rating breakdown98% 5-star

✓ VerifiedSource: Google

Our take: The rating edges out everyone else on this list, and the reviews lean heavily toward fast, well-communicated repair work rather than big installs, so it's the pick when something's broken now.

Website +27820974017 Directions

#3🕑 Open 6 days/wk

Southern Glass

4.572 Google reviews

Southern Glass is a family-owned glass repair and mirror shop in La Rochelle, Johannesburg South, handling window glass repairs, mirrors, and general glazing work. It's a smaller operation than the others on this list, without an extensive product range, but reviewers describe a business that has served the area for years on straightforward glass jobs.

What people praise

4.5 average across 72 reviews
Called out repeatedly for fast, friendly service and competitive prices
Reviewers describe the owner as helpful and the business as genuinely community-minded

Worth knowing

A couple of reviews describe installation mistakes, like a mirror mounted on the wrong side, that required a repeat visit to fix
Smaller team and product range than the aluminium specialists on this list

Reputation scorecardrank in Johannesburg

Rating4.5 / 5

Review volume72 · 87th

Confidenceearly

Recency3 months ago

Info completenesssite · phone · hours

Rating breakdown71% 5-star

✓ VerifiedSource: Google

Our take: It's the pick for a straightforward, budget-friendly glass repair, not for a full aluminium window installation, and the lower confidence score reflects a smaller review base than its rivals.

Website +27114353746 Directions

240 Turf Rd, La Rochelle, Johannesburg South, 2190

#4🕑 Open 5 days/wk

SA Bullet Resistant Glass / Vehicle Armour

4.742 Google reviews

SA Bullet Resistant Glass Co, based in Wemmer, manufactures bullet-resistant security glass for architectural, military, and vehicle applications, from its own factory. The company is open to both the public and industry, and its site describes trademarked in-house glass products built to protect against firearms, forced entry, and blast conditions. This is a specialist manufacturer, not a general residential window installer.

What people praise

4.7 average across 42 reviews
Praised for professional, above-and-beyond service on custom security glass and vehicle armouring
Reviewers describe competitive pricing for a specialized product

Reputation scorecardrank in Johannesburg

Rating4.7 / 5

Review volume42 · 76th

Confidenceearly

Recency3 weeks ago

Info completenesssite · phone · hours

Rating breakdown88% 5-star

✓ VerifiedSource: Google

Our take: This one earns its spot on the list for a narrow reason: if you need bullet-resistant or blast-rated glass for a home or vehicle, it's the specialist to call. For standard window replacement, the other companies here are the better fit.

Website +27114936663 Directions

200 Eloff Ext SE St, Wemmer, Johannesburg, 2001

#5🕑 Open 5 days/wk

K Parker Joinery Wooden Doors and Windows

4.352 Google reviews

K Parker Joinery is a Kew, Sandton joinery with over 28 years building custom wooden doors and windows, alongside aluminium and uPVC options, for homes and businesses across South Africa. The company positions itself as a market leader in solid Meranti and Saligna hardwood joinery, offering side-hung, top-hung, sliding sash, and mock sash wooden window styles built to order.

What people praise

4.3 average across 52 reviews
Praised repeatedly for craftsmanship on custom wooden doors and windows
Reviewers highlight staff who stay involved from order through installation, rather than passing customers between departments
Long track record: one reviewer had 18-year-old joinery repaired using matching pieces

Worth knowing

The lowest rating on this list, with a small cluster of 1-star reviews among otherwise strong feedback

Reputation scorecardrank in Johannesburg

Rating4.3 / 5

Review volume52 · 82th

Confidenceearly

Recency7 weeks ago

Info completenesssite · phone · hours

Rating breakdown77% 5-star

✓ VerifiedSource: Google

Our take: It ranks last on rating alone, but it's the only wooden-joinery specialist here, worth calling specifically if you want timber windows rather than aluminium or glass.

Website +27117865471 Directions

44 12th Rd, Kew, Sandton, 2090

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How we rank Johannesburg window companies

Rating is the live Google average for each business. Review volume measures how many real customers left a rating, benchmarked against every window and glass company we found in Johannesburg. Confidence weighs the rating against that volume, since a handful of five-star reviews carries less weight than hundreds. Recency tracks how recently people are still reviewing the business. None of these numbers can be bought.

How much do windows cost in Johannesburg? (2026)

Window and glass pricing in Johannesburg depends heavily on frame material (aluminium, wood, or uPVC), glass type (standard, laminated, or security-rated), and whether it’s a repair or a full installation across multiple rooms. Custom sizes, finishes, and site access (upper floors, tight spaces) all add to the quote. We didn’t find a source we trust enough to publish specific rand figures for this city, so get written quotes from at least two companies before deciding.

Serving Johannesburg and Gauteng

These companies cover most of greater Johannesburg and the wider Gauteng region: from Benrose and La Rochelle in the south to Sandton in the north, with several also serving Midrand, Centurion, and Pretoria. If you’re searching for a window company near me in Johannesburg, most on this list will quote for anywhere in that radius, though response speed is usually fastest closer to their base.

What to ask before you hire a window company

Is the glass and frame manufactured in-house, or sourced from a third party?
What’s the warranty on both the product and the installation?
How long will the job take, from measurement to finished install?
Do you handle repairs on existing windows, or only new installs?
What frame materials do you work with (aluminium, wood, uPVC)?
Can I see examples of similar completed jobs nearby?

Frequently asked questions

Are these rankings paid?

No. Rankings come from public Google data. A business can pay to be a Featured Partner (badge and top placement), but that never changes another business’s score or position.

How did you choose these window companies in Johannesburg?

We compared window, glass, and aluminium businesses across Johannesburg using real, public Google ratings, review counts, and how recently customers were still reviewing, then ranked the strongest track records.

How often is this updated?

This page reflects data verified in July 2026. We revisit rankings periodically as ratings and review counts change.

Should I choose aluminium, wood, or uPVC windows?

It depends on budget and look: aluminium tends to be durable and low-maintenance (Alu Decor and Ubuntu both specialize in it), while wood offers a different look and is K Parker Joinery’s specialty. Ask each company for the trade-offs on your specific home.

Can any of these companies handle emergency glass repairs?

Ubuntu Aluminium & Glass and Southern Glass are both reviewed specifically for fast repair turnaround, including on short notice.

Do any of these companies do security or bullet-resistant glass?

SA Bullet Resistant Glass Co is the specialist on this list for security-rated and bullet-resistant glass, for both buildings and vehicles.

The bottom line

For most Johannesburg homes, Ubuntu Aluminium & Glass or Alu Decor Glass Solutions are the safest defaults: both are aluminium specialists with strong, high-volume ratings and a wide service area. If you want timber windows instead, call K Parker Joinery. Whatever the job, get the warranty terms in writing before work starts.

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