Aluminium is usually better for large bifold openings because it is stronger, allows slimmer frames and offers more colours. PVCu is cheaper, lighter and naturally insulating, so it suits smaller openings and tighter budgets. The width of the opening and your budget decide which is the better fit.
How do PVCu and aluminium bifold doors compare?
| Feature | Aluminium | PVCu |
|---|---|---|
| Strength | Stronger, suits large leaves | Less robust, bulkier frames |
| Sightlines | Slim, some systems around 36 mm | Wider frame sections |
| Insulation | Needs a thermal break, then performs well | Naturally insulating |
| Weight | Light for its strength | Lighter, easier on mechanisms |
| Finish | Wide RAL colour range | Fewer colours, wood-effect options |
Which lasts longer?
Aluminium frames are commonly quoted at 30 years or more. PVCu is lower maintenance, but it generally does not match aluminium for lifespan or for the size of opening it can handle.
What should decide your choice?
Opening width is the main factor. Wide spans with heavy glass favour aluminium, while a modest opening with a budget limit suits PVCu. Phoenix Windows manufactures PVCu in-house in Nuneaton and fits bifold doors with an insurance-backed 10-year guarantee.
Thinking about new doors? We fit across Nuneaton, Bedworth, Hinckley, Tamworth and Rugby, and every installation comes with an insurance-backed 10-year guarantee. Call 02476 350 330, or request a quote.