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4mm Polycarbonate Sheet

£0.49 Inc. VAT

Our polycarbonate sheeting is an ultra-tough, versatile material with a wide range of possible uses, from secondary glazing, to riot shields, to external panels. Making an excellent alternative to standard acrylic, or glass, this ultra-tough material can be purchased in varying thicknesses to provide further levels of insulate.

Max: 3050mm
Max: 2030mm

Approximate Weight: 23.80 g

In Stock
£0.49 Inc. VAT

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Polycarbonate is a versatile product. It can be easily glued or bonded to other materials. It's remarkably strong, almost 300 times stronger than regular glass, is more or less unbreakable, has a good fire rating and you can cut it to shape yourself to make all sorts of shatterproof items. It's also completely different from acrylic sheeting. If you're not sure which you need, you can either chat with one of our experts or click here to find out the differences between acrylic and polycarbonate.

Product description

Because polycarbonate is one of the strongest plastics around, it's ideal for all sorts of glazing projects, from Wendy houses to greenhouses, porch windows and conservatory roofs. It's as much as five times lighter than glass but lets up to 90% of the light through. It is heat resistant, snow, rain and sunlight resistant, and lasts for years without fading or discolouring. It's cost-effective, strong, durable and looks just like glass.

Key Features

– One of the planet's toughest plastics
– 5 times lighter than glass and lets 90% of the available light shine through
– Incredibly strong and rigid
– Thermoforms multiple times without losing its quality or strength
– Better at resisting impacts than acrylic sheet
– Brake-forms to a tenth of an inch thick
– Bullet resistant when very thick
– Easy to work with whether you want to drill, cut, form or bend it
– UV resistant– Abrasion resistant
– Meets both UK and EU fire standards


– Security glazing in banks, on buses, in GP surgeries and hospitals, factories, houses, sheds, greenhouses and carports
– Machine guards on lathes, presses, guillotines and other dangerous equipment
– Windows for drag racing, rally and racing cars
– Riot shields, spectacles and safety glasses
– Transparent manifolds, signage and nameplates
– Roofing and roof trims
– Point-of-purchase displays
– As a replacement for glass when the glass isn't safe, light or strong enough



Material Polycarbonate
Finish Clear
Available Thicknesses 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm
Maximum Sheet Size 3050mm x 2030mm
Minimum Sheet Size 100mm x 50mm
Fire Rating UK Class 1 Fire Rating
Water Absorbtion 0.15%
Manufacturers Tolerances +/- 10% plus 0.4mm (e.g. 5mm cast sheet could vary from 4.1mm to 5.9mm)
Cutting Tolerances +/- 1mm

Frequently Asked Questions

Will polycarbonate yellow over time?

Any polycarbonate sheeting that does not have resistance to UV lights will deteriorate in clarity and turn yellow. Our polycarbonate sheeting does have this resistance, and will not go cloudy.

Can polycarbonate be recycled?

Our polycarbonate sheeting is fully recyclable due to being created from petroleum and oils which are completely degradable.

How strong is polycarbonate?

Polycarbonate is 30 stronger than standard acrylic sheeting, and 200 times stronger than traditional glass.

What's the difference between acrylic and plexiglass?

Acrylic is the abbreviation for polymethyl methacrylate, with Plexiglas being one of the brand names, like Lucite and Crylux. Like how Hoover is synonymous to vacuum cleaners. 

What is plexiglass used for?

Plexiglass can be used for a variety of projects, especially when made from a variety of UV and other coatings. Manufacturers can use plexiglass in any task, but most commonly used where a sheet of glass is used, such as in cars, or windows.

Why Plexiglass is expensive?

In most cases, the reason for the cost is because of the specific process involved in making plexiglass giving the plastic stronger, longer-lasting durability. Casting it in a cell gives it the glass-like quality with plastic features, but makes it more expensive as a result.

What is plexiglass made from?

Plexiglass is made from a petroleum-based thermoplastic named polymethyl methacrylate, known as PMMA. 

Can you drill holes in plexiglass?

While it can be challenging, it is possible to drill holes in plexiglass. Care will need to be taken to prevent cracking or chipping.

Can plexiglass be used for windows?

Yes. Plexiglass makes a brilliant alternative to windows, especially as they’re safer and last longer. They also weigh roughly half of the glass, making them easier to move, cut and install.

How to cut Plexiglass?

When using a cutter or a knife, use the cutter or the dull side of a knife to score the plexiglass along the marked line five to ten times. Flip the sheet and repeat on the opposite side. Line up the scoreline with the edge of your work surface and clamp. Finish with a wet-sanding, and progress to finer sandpaper up to 600-grit.




Product as we expected and suitable for their intended purpose


Exactly as ordered, all possible options offered. Free delivery was a major bonus.






5star great thanks a lot !




Quality product. Well packaged for delivery and delivered quickly.


Great, really pleased with it.


the product is exactly as described and was cut accurately

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Rated 4.7/5 on Feefo

great thanks
Collected from factory really early one morning......had a bit of a problem finding my piece.........but all good with 7 minutes..........Recommend "Cut My Plastic"
Good value.Came securely packaged,and promptly.
There was a lot of questions and time wasted at the start which seemed to go on for ages. Once we had paid our money they did seem to get a move on, it was well packaged and arrived undamaged. Although there were the occasional scratch mark, so in the end we re-used 2 of our old curved windows as we thought they were in better condition.

Based on 779 reviews.