Greenhouse Panels

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4mm Twinwall polycarbonate is an ideal replacement for broken glass panels in your greenhouse. Thermally superior and 200x stronger than glass, polycarbonate is much lighter weight and easier to handle. UV protected on one side. Available in standard sizes, it is easy to trim to size on site with a Stanley knife or similar. This replacement glazing allows you to revamp your greenhouse easily and economically. Flutes ends can be taped with 10mm breather tape (available in Accessories section.)

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Greenhouse Glazing

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Excl. VAT: £0.00 Incl. VAT: £0.00


4mm Twinwall Polycarbonate Greenhouse Glazing

Mainly used for Greenhouse glazing, the sheets are manufactured from damage-resistant polycarbonate with added co-extruded long life protection from the effects of UV rays. Polycarbonate has very high impact resistance and fine optical clarity. The high performance UV absorption layer means longer life and prevention of yellowing and loss of strength. Polycarbonate offers excellent protection against vandalism and accidental damage with an impact resistance up to 200 times greater than glass. This characteristic is maintained over a broad temperature range and prolonged service life.

Main Benefits

  • High levels of natural light
  • Light weight and easy to handle
  • High optical clarity
  • Thermally insulating
  • Damage and impact resistance
  • Weatherable Longlife UV protection
  • 10 year warranty
  • Perfect for replacing greenhouse sheets


  • Greenhouses
  • Vertical, Secondary and Internal Glazing



  • Tints: Clear


Thickness Chart

4mm Polycarbonate Sheet Thickness

U-Value 3.8
Light Transmission 62%
Weight (kg per sqm) 0.8
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