Perspex vs Polycarbonate: A Guide for Australian Buyers

Perspex is a brand name for acrylic sheet — specifically the Lucite International brand widely sold across Australia. When Australians search for 'Perspex vs polycarbonate', they're really asking about the classic clear plastics comparison: acrylic versus polycarbonate. This guide answers that question in an Australian context.

What Is Perspex?

Perspex is cast acrylic sheet — polymethyl methacrylate (PMMA) — manufactured to a high optical standard. It's the same material as generic acrylic sheet, just from a specific brand known for consistency and clarity. In Australia, 'Perspex' is commonly used as a generic term for any acrylic sheet, much like 'Biro' for ballpoint pens.

At P&M Plastics, we stock Perspex brand acrylic as well as other quality acrylic sheet in clear, opal, and a full colour range.

Optical Clarity

Perspex acrylic is optically superior to polycarbonate, transmitting approximately 92% of visible light versus polycarbonate's 88%. Perspex has a brilliant glass-like clarity that polycarbonate can't quite match. For signage, displays, and retail applications where visual impact matters, Perspex is the premium choice.

Impact Resistance

Polycarbonate is the winner by a large margin. Polycarbonate is approximately 250 times more impact-resistant than standard glass — it's virtually unbreakable under normal conditions. Perspex acrylic is 17 times more impact-resistant than glass, which is excellent, but it will crack if struck hard enough.

In Queensland's cyclone-prone coastal regions, polycarbonate is often specified for roofing, windscreens, and security glazing where breaking isn't an option. Perspex is the right call for lower-impact environments where clarity is the priority.

UV Resistance in Australian Conditions

Australia's UV intensity is among the highest in the world — particularly on the Gold Coast and in Queensland generally. This makes UV performance a critical consideration.

Perspex acrylic resists UV naturally and won't yellow or craze under prolonged sun exposure. Polycarbonate requires a UV-protective coating; once that coating wears through (typically 5–10 years outdoors), yellowing and surface degradation accelerate. For long-term outdoor installations — outdoor signage, pool fencing, pergola roofing — cast acrylic's natural UV resistance is a genuine advantage.

Common Australian Applications

Perspex Acrylic is typically used for:

Retail and shop displays • Point-of-sale signage • Acrylic letters and cut-to-size panels • Menu boards • Sneeze guards • Pool fencing where impact risk is low • Indoor partitions and balustrades

Polycarbonate is typically used for:

Cyclone-rated roofing and pergolas • Machine guards and safety barriers • Carport and patio roofing • Security windows • Pool fencing in high-impact areas • Marine windscreens

Fabrication

Both materials are available from P&M Plastics in sheet form and can be CNC routed, laser cut, and heat-bent. Perspex acrylic laser cuts to a beautifully flame-polished edge with no secondary finishing needed. Polycarbonate is slightly more difficult to achieve clean laser-cut edges on but can be CNC routed to excellent results.

Cost

Perspex acrylic sheet is generally 30–35% cheaper than polycarbonate of equivalent thickness. For display work and interior applications, this is a meaningful cost saving. The polycarbonate premium is only justified when impact performance is genuinely required.

Which Should You Choose?

Choose Perspex Acrylic when you need:

Crystal-clear optical quality • Natural UV resistance outdoors • Better value for display and signage • Laser-cut edges or engraved panels • Lighter-impact environments

Choose Polycarbonate when you need:

Maximum impact resistance • Cyclone-rated or safety-critical glazing • Machine guards • Applications where breakage is unacceptable

Shop Both at P&M Plastics

We stock Perspex acrylic and polycarbonate sheet at our Burleigh Heads warehouse. We cut to size, laser cut, CNC rout, and fabricate custom pieces. Browse our materials at /materials/acrylic-perspex and /materials/polycarbonate-plastic, or compare side by side at /materials/compare. Call us on 07 5535 7544.