Onduline Roofing Sheet & Accessories

Apron Flashing

Onduline Apron Flashing

Onduline Apron Flashing is designed to seal the gap between Onduline sheets and vertical wall abutments. It is suitable for any pitch of roof and pre-formed to match the sheet profile exactly. Available in black.





  • Pre-formed flashing
  • Matches Onduline sheet profile
  • Black only
  • Length 930mm
  • Cover 846mm


ideal for

  • Garages
  • Stables
  • Agricultural Buildings
  • Garden Rooms
  • Summer Houses




Installation guidance available on request.


Properties Coroline Onduline Mini Onduline
Sheet Size 2000mm x 950mm 2000mm x 866mm 2000mm x 950mm
Cover Width 855mm 768mm 855mm
Thickness 2.6mm 2.6mm 3.0mm
Sheet Weight 5.6kg 5.8kg 6.4kg

38mm height
95mm width

24mm height
48mm width

38mm height
95mm width


Sheet Requirements
To calculate the number of sheets required to complete your roof, measure the width of the roof and divide this figure by the cover width -
ie: the roof is 3000mm wide, divide by 855mm = 3.5 sheets.

Round this figure up to the nearest full sheet - 4 sheets will be required.

Fixings Requirements
Divide the roof width by the fixing centres. Divide the roof length by the support centres and add 3.
Multiply these two values together .

= approximate number of fixings required.

Thermal Properties
U Value 4.4W2K

15 Year Warranty
This product is covered by a 15 year waterproof guarantee. A replacement is provided free of charge if the product has failed to remain waterproof, in normal weather conditions within a 15 year period from the date of purchase.
Coroline 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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    Preformed ridge for use with Onduline sheets

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  • Ventilator Comb

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  • Batten Cloaking Piece

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    For use with the ventilator strip

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  • Eaves Tray

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    Preformed eaves tray for use with ventilator strip and batten cloaking piece

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