Aluminium Doors vs uPVC Doors

Aluminium doors vs upvc doors: the key facts, in plain language.

When comparing aluminium doors and uPVC doors, the trade-off is usually strength and slim looks versus upfront cost and insulation. Aluminium is a metal, so it’s far stronger and can carry larger glass with slimmer frames; uPVC is a plastic that’s cheaper and insulates well but needs bulkier frames. Coetz™ supplies made-to-order aluminium doors — here’s an honest comparison to help you decide.

Quick comparison

Feature	Aluminium Doors	uPVC Doors
Strength	Very strong (metal)	Weaker; needs internal reinforcing
Frame slimness	Slim frames, more glass	Bulkier frames, less glass
Large openings	Handles big, heavy doors	Limited for large sizes
UV & SA sun	Powder coat is UV-stable	Can discolour or become brittle over time
Maintenance	Low	Low, but colour can fade
Cost	Competitive; premium finish	Lower upfront
Best for	Large glazing, modern look, longevity	Tight budgets, smaller openings

Strength & large openings

Aluminium’s strength lets it span large, heavy door leaves with slim frames — perfect for expansive glazing and modern designs. uPVC is weaker and usually needs steel reinforcing inside the profiles, which limits how large a door can go and adds bulk to the frames.

Looks & sightlines

Slim aluminium frames maximise glass and give a clean, contemporary look. uPVC frames are chunkier, which reduces the glass area and reads as less premium — though it remains a practical choice for smaller openings on a tight budget.

Durability in the SA climate

South Africa’s strong UV is demanding. A powder-coated aluminium finish is UV-stable and holds up well over the years. uPVC can discolour, and in intense sun cheaper grades may become brittle over time. Both are low maintenance day to day, but aluminium keeps its finish longer.

Advantages of aluminium doors

• Much stronger — ideal for large, heavy doors
• Slim frames and maximum glass
• UV-stable powder-coated finishes
• Modern, premium appearance
• Long service life and made to order

Advantages of uPVC doors

• Lower upfront cost
• Good thermal insulation
• Practical for smaller openings
• Low day-to-day maintenance

Which should you choose?

• Best for large glass and modern looks: aluminium.
• Best for the tightest upfront budget: uPVC.
• Best for high-sun and coastal durability: aluminium.
• Best for slim sightlines: aluminium.
• Best long-term investment: aluminium.

Coetz™ supplies made-to-order aluminium doors in standard sizes and five colours, glazed with 6.38 mm clear laminated safety glass. Send us your requirements for a no-obligation quotation.

Shop & related

Helpful next steps: Aluminium vs uPVC Windows · How to Measure Aluminium Doors · Warranty.

Aluminium doors vs upvc doors: the key differences

The aluminium doors vs upvc doors question comes down to maintenance, cost, thermal performance and looks. uPVC doors can look bulky and may discolour in UV over time, though they insulate well. Aluminium doors, by contrast, are strong and slim yet never rust or need painting, and modern powder-coated finishes keep their colour for decades. For most South African homes and projects, weighing aluminium doors vs upvc doors points to aluminium on running costs and upkeep, while uPVC keeps a place where the upfront budget is the deciding factor.

Cost, maintenance and durability

Upfront, uPVC is usually cheaper, but the long-term picture narrows the gap. uPVC can discolour or turn brittle in strong sun and is hard to repair; aluminium needs little more than an occasional clean and keeps its finish. In coastal and high-rainfall areas the aluminium doors vs upvc doors gap widens further in aluminium’s favour. Both can be glazed with 6.38mm laminated safety glass; the frame material is where the real difference lies.

Which should you choose?

Choose aluminium doors for a low-maintenance, rust-free, modern specification that suits almost any build. Consider uPVC where the upfront budget matters most and the opening is small. For most new builds and renovations, the aluminium doors vs upvc doors decision favours aluminium — and Coetz™ supplies the full range of aluminium doors direct across South Africa.

Why aluminium is the modern choice

Across windows, doors and shopfronts, aluminium has become the default specification for good reasons: it is strong yet slim, rust-free, and needs no painting, so it keeps its looks with almost no maintenance. Modern powder-coated finishes hold their colour for decades in harsh South African sun, and aluminium is fully recyclable. For homeowners, developers and commercial projects alike, it delivers a clean, contemporary result that lasts.

Supplied direct across South Africa

Coetz™ supplies aluminium windows and doors factory-direct and supply-only, delivered nationwide, and makes custom shopfronts that MC Automations, our parent company, installs. Standard sizes ship fast; custom orders are made to measure with clear lead times, and we provide fitting guidance for your installer.

Is aluminium better in the aluminium doors vs upvc doors comparison?

For most homes, yes. In the aluminium doors vs upvc doors comparison aluminium wins on maintenance, colour retention and durability, with no rust and no repainting.

Choosing between aluminium doors vs uPVC doors

When you compare aluminium doors vs uPVC doors, these points usually decide it:

• Maintenance. Aluminium needs washing, not repainting, and does not rot, swell or rust.
• Strength and sightlines. Aluminium is strong enough for slim frames and large glass panels.
• Colours. White, Bronze, Charcoal, Black or Natural Anodised; Black costs about 10% more and Natural Anodised about 20% more.
• Glass. Every Coetz™ unit has 6.38 mm clear laminated safety glass. The exceptions are our Patio sliding doors and a few large Elite sliding door sizes, which use toughened safety glass.
• Price. Compare like for like – price aluminium in the online estimator.

Coetz™ supplies aluminium windows and doors only, nationwide. Still deciding on aluminium doors vs uPVC doors? See the comparison centre.