Acrylic vs Polycarbonate: Which Clear Plastic Sheet Should You Choose?

When customers come to us needing a clear plastic sheet, the first question is almost always the same: acrylic or polycarbonate? Both materials look similar on the shelf, but they perform very differently in the field. Getting the choice right can be the difference between a long-lasting installation and a costly replacement within a few years.

This guide compares the two materials across every property that matters — optical clarity, impact strength, UV performance, fabrication, and cost — so you can make an informed decision for your project.

Optical Clarity

Acrylic wins on clarity. It transmits approximately 92% of visible light — actually more than standard glass, which sits around 90%. Polycarbonate transmits around 88%. The difference is subtle to the naked eye in a single sheet, but across glazing systems or display cases it becomes noticeable. Acrylic also retains its clarity over time; polycarbonate can develop a slight yellowing without UV-stabilised coatings.

For shop displays, signage, and aquariums where pristine optical clarity matters most, acrylic is the preferred choice.

Impact Resistance

Polycarbonate wins on impact resistance — by a large margin. Polycarbonate sheet is approximately 250 times more impact-resistant than standard glass. Acrylic is no pushover — it's around 17 times more impact-resistant than glass — but polycarbonate is genuinely in a different league. It's virtually unbreakable under normal circumstances.

On the Gold Coast and across South-East Queensland, polycarbonate is the go-to choice for applications exposed to potential impact: cyclone-rated roofing, machine guards, security windows, and outdoor barriers. Acrylic, if struck hard, will crack or shatter — though it breaks into blunt-edged pieces rather than dangerous shards.

UV Resistance and Weatherability

Acrylic performs better outdoors without coatings. Its chemical structure naturally resists UV degradation, meaning it won't yellow, craze, or lose clarity over time when exposed to the harsh Australian sun. Polycarbonate requires a UV-stabilised coating to achieve similar outdoor longevity — and once that coating wears through, yellowing accelerates.

For long-term outdoor applications on the Gold Coast — pool fencing, skylights, outdoor signage — cast acrylic sheet is often the better long-term investment despite its lower impact resistance.

Scratch Resistance

Acrylic is more scratch-resistant than polycarbonate. This surprises many customers. Polycarbonate is so tough it can withstand a hammer, but it scratches easily with everyday contact — keys, cleaning cloths, debris. Acrylic is harder on the surface and holds its gloss finish better over time.

If you need a clear material in a high-traffic area where scratching is a concern — a retail display, a sneeze guard, a menu board — acrylic is likely the better choice unless impact is a significant risk.

Machinability and Fabrication

Acrylic is easier to cut, rout, and polish. It cuts cleanly with CNC routers and laser cutters, produces sharp edges, and can be flame-polished to a crystal-clear finish. Polycarbonate is tougher to machine — it tends to melt slightly under heat, produces more burrs, and is harder to achieve a polished edge on.

At P&M Plastics, we CNC rout and laser cut both materials daily. Acrylic gives us cleaner, faster results for precision cut-to-size work. Polycarbonate takes more care but is absolutely workable for the right applications.

Thermoforming

Both materials can be heat-bent and thermoformed. Acrylic requires higher temperatures and is more prone to cracking if bent incorrectly, while polycarbonate is more forgiving and can be cold-bent to a slight radius without heating. For complex curved shapes, polycarbonate is generally easier to work with.

Chemical Resistance

Acrylic has better resistance to many common chemicals. Polycarbonate is susceptible to attack from a range of solvents, fuels, and cleaning products that acrylic handles without issue. If your application involves chemical exposure — laboratory environments, industrial covers, chemical storage lids — check the chemical compatibility of both materials before committing.

Cost

Acrylic sheet is generally 30–35% cheaper than equivalent polycarbonate sheet. For large-format glazing, display cases, or high-volume cut-to-size orders, the cost difference is meaningful. Polycarbonate's premium is justified for impact-critical applications, but for standard display or signage work, acrylic offers better value.

Which Should You Choose?

Choose Acrylic when you need:

Maximum optical clarity • Outdoor UV resistance without coatings • Better scratch resistance • Lower cost • Clean laser-cut or CNC-routed edges • Display cases, signage, sneeze guards, aquariums, shop fronts

Choose Polycarbonate when you need:

Maximum impact resistance • Machine guards or security glazing • Cyclone or hail-rated roofing • Cold-bending to shape • Applications where breakage is a safety risk

Talk to Our Team

Still not sure which material suits your project? P&M Plastics stocks both acrylic and polycarbonate in a wide range of thicknesses, sizes, and colours. We cut to size, CNC rout, laser cut, and fabricate custom pieces at our Burleigh Heads workshop.

Browse our acrylic and Perspex page at /materials/acrylic-perspex and our polycarbonate page at /materials/polycarbonate-plastic, or use our interactive material comparison tool at /materials/compare to compare properties side by side. Call us on 07 5535 7544 or get a quote online.