Corotherm Clear 25mm Multiwall/Sevenwall Polycarbonate Roof Sheet

£38.69 Incl. VAT
£32.24 Ex. VAT
Estimated delivery: 5-7 working days


25mm Clear Multiwall/Sevenwall Corotherm is a light weight, impact resistant polycarbonate roofing and glazing sheet.  25mm Multiwall Corotherm polycarbonate has a U-value of 1.4W/m²K and is available in clear, bronze, opal, bronze opal and heatguard opal.



  • Standard tints: clear, bronze, opal
  • Dual tints: bronze opal and heatguard opal
  • Light weight glazing sheet
  • UV resistant for durability
  • Durable and hardwearing
  • U-value 1.4W/m²K
  • Minimum condensation risk
  • Largely self-cleaning
  • 10 year warranty


Ideal for

  • Porches
  • Canopies
  • Car ports
  • Conservatories
  • Lean-to-roofs



  • Make sure the clearly marked UV protected side of the sheet is facing outwards
  • Allow a minimum of 10° roof slope for water drainage
  • Use only low modulus neutral cure sealant and cross-linked butyl flashing tape
  • The flutes of the sheets must run from top to bottom of the slope, never from side to side
  • Sheets cannot be joined top to bottom


10 Year Warranty

This product is covered by a 10 year warranty. A replacement is provided free of charge if the product has failed due to a manufacturing defect, in normal climatic conditions within a 10 year period from the date of purchase. Corotherm MUST be fixed and maintained in accordance with the manufacturer's instructions for the warranty to remain valid: re-erections or consequential damage costs are not included.

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