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Marlon 25mm Opal Sevenwall Polycarbonate Roof Sheets

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£42.72 Incl. VAT
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Corotherm multiwall polycarbonate is the light weight, impact resistant, insulating glazing sheet from Ariel Plastics. Suitable for a wide range of roofing and glazing applications around the home and garden including canopies, veranda covers, carports and greenhouses, Corotherm sheets are available in clear for maximum daylight and a range of solar controlling tints. Full sheets can be purchased from the range of standard sheet sizes or the Cut to Size service allows customers to order to their exact size requirements. Corotherm sheets are easy to cut, handle and install and carry a 10 year warranty.

Multiwall polycarbonate

We offer a wide range of multiwall polycarbonate glazing sheet and accessories for roofing and glazing applications around the home and garden. Whether you are installing a canopy, carport or replacement roof glazing, we have the perfect solution for your project. Choose from the range of standard sized multiwall polycarbonate glazing sheets or use the cut to size service to order to your exact size requirements. For a complete roof pack service choose from the ready to install self supporting roof system or order multiwall polycarbonate installation accessories for your timber supported roofing system.


• High impact resistance : up to 200 times greater than glass.
• Excellent protection : against hailstones, vandalism and accidental damage.
• Insulating glazing : which can achieve a sheet uValue of 1.6 W/m²K.
• Virtually opaque sheet : desirable feature in built up areas.
• Provides : a private setting with a soft light quality.
• Reduces glare : especially important for studying or working.
• Eliminates : sun ‘hotspots’ but keeps the environment bright.
• Light transmission : 30% means you can still enjoy the benefits of the sun.
• High strength : weight ratio.
• Cost effective : as sheet weight is low, support structures can be lighter providing cost effective buildings.
• Up to "Class 1" fire rating : polycarbonate is a self-extinguishing material which will melt away from the flames, stopping as soon as the source is removed. Note: 6mm Twinwall does not have a Class 1 fire rating.

Marlon provides high levels of insulation.

The Corotherm range by Ariel comes with a 10 Year Guarantee.


WIDTH 800mm
LENGTH 6000mm


Size 4000mm x 1050mm
2000mm x 1600mm
2500mm x 1600mm
6000mm x 900mm
6000mm x 700mm
6000mm x 1050mm
4000mm x 900mm
3000mm x 900mm
6000mm x 800mm
Colour Opal Material Polycarbonate

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5 / 5 2 reviews
David Bailey
Reviewing Marlon 25mm Opal Sevenwall Polycarbonate Sheet - 4000mm x 700mm
15th August 2020
it works very well.
Tanya Daly
Reviewing Marlon 25mm Opal Sevenwall Polycarbonate Sheet - 2000mm x 700mm
26th March 2020
I had clear single wall polycarbonate on our lean-to but this stuff is so much better, not only does it stop the room getting cold, but it also keeps the harsh sunlight out so the room is a nice constant temperature. The opal is much better than the clear, looks more stylish and still makes the room look light
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Marlon 25mm Opal Sevenwall Polycarbonate Roof Sheets

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