What makes ONDULINE® resistant to strong winds?
- A unique fixation system with washer of 16 mm minimum (standard on the market have a diameter of 14 mm or less).
- A minimum of 10 fixations per m2.
- ONDULINE® sheets have a corrugated shape, which increases their rigidity and stability.
- ONDULINE® sheets are flexible and resilient, which allows them to absorb shocks and vibrations caused by wind gusts.
- They come with matching accessories that do not let the wind pass through the sheets.
Thanks to this, ONDULINE® CLASSIC sheets can resist to high winds, up to 225 km/h when installed on metal structure, and up to 260 km/h when installed on wooden purlins. ONDUVILLA® can resist up to a wind speed of 315 km/h when installed on metal structure, and up to 290 km/h when installed on wooden purlins.
What is the resistance capacity of ONDULINE® sheets to strong winds?
ONDULINE® CLASSIC sheets can reach a very strong resistance to high winds, up to 225 km/h when installed on metal structure, and up to 260 km/h when installed on wooden purlins. ONDULINE sheets are a particularly clever choice for coastal areas, areas subject to typhoons and where buildings are particularly exposed.
- ONDUVILLA® can resist up to a wind speed of 315 km/h when installed on metal structure, and up to 290 km/h when installed on wooden purlins.
(This higher resistance is due to the number of fixations).
- Products tested: CLASSIC + ONDUVILLA® with universal screws. Any other installation configuration cannot refer to these tests.
- Ex: ONDUVILLA® installed with other fixings.
Belgian Building Research Institute (BBRI) –Wind uplift test on roof waterproofing:
- DE 651XM223 CAR 15070/1 (29) = ONDULINE® CLASSIC Metal Purlin = 3000Pa (225 km/h)
- DE 651XM223 CAR 15070/2 (29) = ONDULINE® CLASSIC Wood Purlin = 4000Pa (260 km/h)
- DE 651XL019 CAR 13222/1 (85) = ONDUVILLA® Metal Purlin = 6000Pa (315 km/h)
- DE 651XL019 CAR 13222/2 (85) = ONDUVILLA® Wood Purlin = 5000Pa (290 km/h)
Did you know?
1) Performance-based wind engineering (PBWE) is an ever-growing research field. The significant wind-related economic losses incurred every year around the world have prompted researchers to develop methods to reframe wind engineering.
2) Wind load is one of the significant action on roofs. There is also the load of self-weight materials.
3) Several ONG favourised ONDULINE® over traditional metal roof to build new shelters after floods (Malawi) and earthquake (Haiti).
Testimonial ONG report Haiti , p18 (2011):
“The use of Onduline corrugated bituminous roofing meets the project requirements in a number of respects. This type of roofing has several advantages over the traditional corrugated metal roofing as the sheets are lighter, easier to transport and install, less expensive, provide greater insulation and are not as sharp, being thus less of an accident risk during high winds. This final point was particularly highlighted by the authorities, especially the DPC, who underlined that cuts from steel roofing sheets are one of the most common causes of injury during storms”.