Which Should You Choose?
Choose PETG when toughness matters: it flexes and resists impact without shattering, and it is easy to cut and bend. Choose acrylic when clarity and rigidity matter most, or when the panel lives outdoors, because acrylic is slightly clearer, stiffer and far more weather-resistant. Both cost about the same.
PETG and acrylic look almost identical on the shelf, and both make excellent clear panels. The right pick comes down to how the sheet will be handled, where it will live and what you are cutting it with. Here is how they compare. For the full picture on PETG itself, see our PETG guide.
PETG vs acrylic at a glance
| Feature | PETG | Acrylic (Perspex) |
|---|---|---|
| Impact resistance | High — bends before breaking | Moderate — can crack on impact |
| Clarity | Very good (~90%) | Excellent (~92%) |
| Rigidity | More flexible | Stiffer, holds flat |
| Cutting | Cuts and snaps easily, low chip risk | Cuts well but can chip or crack |
| Bending | Cold-bends and thermoforms easily | Needs even heat to bend |
| Outdoor / UV life | Limited in standard grade | Excellent, stays clear for years |
| Scratch resistance | Moderate | Moderate |
| Max service temp | ~65°C | ~80°C |
| Cost | Low to mid | Low to mid |
When to choose PETG
PETG is the safer bet whenever a panel gets handled, moved or knocked. Because it flexes and absorbs impact, it survives fabrication and daily use without cracking. Pick PETG for machine guards, protective screens, face shields, retail displays and anything you plan to bend or cut by hand. It is also the easier material for beginners, since it tolerates rough cutting far better than acrylic.
When to choose acrylic
Acrylic wins when you want the clearest, flattest, most rigid panel, and it is the only one of the two suited to permanent outdoor use. Pick acrylic for glazing, display cases, signage that stays put, picture framing and any panel exposed to sun and weather. It polishes to a cleaner edge, which matters for visible display work.
Is PETG better than acrylic?
Neither is better overall; they are built for different priorities. PETG is better for toughness, safety and easy fabrication. Acrylic is better for clarity, rigidity and outdoor durability. If you expect impact or handling, lean PETG. If you want optical quality or the panel faces the weather, lean acrylic.
Does PETG or acrylic scratch more easily?
They are close. Both have moderate scratch resistance and both benefit from a protective film during work and gentle cleaning afterwards. Neither matches glass for scratch resistance, so for high-wear surfaces you may want an anti-scratch coated grade, available in both materials.
Frequently asked questions
Is PETG the same as Perspex?
No. Perspex is a brand of acrylic (PMMA). PETG is a different plastic, a glycol-modified polyester. They look similar but PETG is tougher and more flexible, while Perspex acrylic is clearer and more rigid.
Which is cheaper, PETG or acrylic?
Prices are broadly similar and depend on thickness, size and grade. Cost is rarely the deciding factor between the two, so choose on performance instead.
Can both PETG and acrylic be used for glazing?
Yes. Acrylic is the more common glazing choice for its rigidity and weather resistance, but PETG works well for glazing that needs extra impact resistance, such as in schools or busy public areas.
Which is easier to cut?
PETG. It cuts and snaps with less risk of chipping or cracking, which makes it more forgiving for hand-cutting and DIY work.
Which lasts longer outdoors?
Acrylic. It resists UV and stays clear for years outside, while standard PETG can yellow and weaken in prolonged sun unless you specify a UV-stable grade.
Still not sure? We cut both to size
Plastic Sheets Direct supplies both PETG and acrylic cut to size, delivered across the UK. Weighing plastic against glass instead? See our guide on acrylic vs glass.