Onduline is one of the most popular bituminous corrugated roofing sheets. Onduline roofing sheets are easy to handle and simple to fix, requiring no
It is manufactured from a mono-layer of organic fibres impregnated with bitumen under intense pressure and heat. The colour pigmentation system “stains” the colour into the sheet with a UV resistant resin. The roofing sheet is flexible and durable with excellent weathering and colour retention properties. Onduline corrugated roofing sheet specification: Onduline sheet size: 2 x 0.95m Onduline sheet weight: 6.4kg Onduline corrugation size: 95 x 38mm Onduline sheet thickness: 3mm Colours: Black, Green, Red, Brown. Onduline corrugated roof sheet got guaranteed waterproof for the first 15 years. Onduline withstands windspeeds up to 120mph (192kph). Onduline roofing sheets are rot and fungiresistant .
The great question is the onduline corrugated roof sheet fire resistant? The company says about antipirens inside the onduline sheet. Do it work? We decided to test the onduline fire resistance. Watch our video below. Sorry folks, it is in Russian, but you will see everything with your own eyes: the only way to put onduline on fire is to flame it's cut. That part of the roof sheet is not fire resistant. But looks like it can stand against the fireworks from the corrugated part. But In Grait Britain it is not allowed for housing - only after fire resistant paint treatment.
Here is our onduline corrugated roof sheets illustrated installation manual:
|Original corrugated Onduline roof sheet is mono-layer of organic fibres impregnated with bitumen and color pigment.||The original Onduline roof sheet got the Onduline trade mark imprint on each sheet.|
|Onduline corrugated roof sheets comes with original nails and plastic nail washers with caps. Only use Onduline PP or Safetop nails on timber. Use a string line to keep fixings in line.||Original Onduline roofing nails with plastic caps. Be sure to lock the cap well: it has intention to opened from tim to time.|
|Onduline is resistant to the build up of condensation. However it is at risk of condensation formation during the winter months. Generally, air movement generated by the installation of high and low level ventilation will avoid this problem. The risk of condensation can be further reduced byusing an Ondutiss underlay membrane fixed below the purlins.||It is essential that the correct support be applied to the Onduline sheets. Consult the illustrations below to set the correct fixing specification. First establish the roof pitch. You can then check if a decking is required or at what centres the purlins should be fixed. Finally note the sheet end and corrugation side laps and set out the roof accordingly. Roof pitch 15o or more: Purlins fixed at maximum span of 610mm. (10-15o - 450mm)|
|Start fixing sheets at the opposite end of the roof from the prevailing winds. Cut a sheet in half vertically and use to lay sheet courses in a broken bond pattern. The maximum sheet overhang at the eaves is 7cm.||Nail sheets every corrugation at the eaves and sheet overlaps and either side of vertical joints. Nail every other corrugation on intermediate purlins.|
|Fasten timber barge board level with the top of finished Onduline roof. The Onduline verge units are then overlaid and nailed into position. Alternatively, fix barge board level with the underside of the Onduline corrugation and overhang corrugation. Fold down and nail in position.||Use Onduline pre-formed apron flashing to seal end wall abutments. Use separate cover flashing to the wall to allow for movement.|
|Fix valley boards/trimming purlins and line with either Onduline, metal, or GRP performed liner units. The vertical valley depth should be 7.5cm.||Wrong Onduline corrugated sheets installation: the seets were not cut in half vertically with a new row to lay sheet courses in a broken bond pattern.|
|Time and sun can couse color changes with Onduline roofing sheets.||The green Onduline roofing sheets are the most color durable (and expensive).|