Coroline Installation Guide (PDF, opens a new tab)
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Bitumen roofing sheets / Product information
Bitumen Sheet Apron Flashing
Apron Flashing is designed to seal the gap between bitumen sheets and vertical wall abutments.
More about this product
It is suitable for any pitch of roof and pre-formed to match the sheet profile exactly. Available in black. For use with both Coroline and Onduline sheets.
- Pre-formed flashing
- Matches Coroline and Onduline sheet profiles
- Black only
Published product information
Detail & guidance
Pre-formed flashing
Matches Coroline and Onduline sheet profiles
Black only
Length 930mm
Cover 846mm
ideal for
Tool Sheds
Garden Offices
Summer Houses
Garages
Stables
Kennels
Refer to the Coroline and Onduline installation guide and Coroline installation video for complete installation instructions.
Properties
| 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 |
| Corrugation | 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 4.4W 2 K
Supporting resources
Documents for this range
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Linked in the published catalogue
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Source & review information
Content imported from Ariel’s published product information, captured 27 October 2026. Final technical/content approval is pending; current stock, delivery and warranty assurances are not asserted. Source reference (opens a new tab) ↗