Onduline Roofing Sheets Overlap

15 fixings minimum should be used per sheet.

Onduline roofing sheets overlap.

Stagger the rows by starting the second row with a half sheet see in drawing the sheet 4. Get your measurements right. The ridge element should overlap the onduline sheet at minimum 14 cm. Overlap and side overlap.

The direction of the overlap is opposite to the direction of the prevailing winds. The run is the horizontal distance of the ridge from the eave. Ensure waterproofing by aligning the overlapping lines. Ensure watertightness at ridge by applying the onduvilla foam fillers on both sides of the ridge line.

Slope of the roof. The roof slop is often stated as the inches of vertical rise per 12 inches of horizontal run length. Overlap 12 cm 3. To have a long lasting and guaranteed roof it is mandatory to follow the nailing order and pattern ridges start fixing the ridge element opposite to the prevailing winds end of the roof.

Fix 19 nails or screws per sheet to have a longlasting and guaranteed roof. The rise if the vertical distance of the ridge above the eave. Of course sheets can be cut but there s a minimum requirement for overhang 70mm at the eaves and pitching 5 degrees. Up signs indicate the direction of the ridge to lay the sheets correctly.

Onduline roofing only comes in one length 2m x 0 95m so your first port of call should be to ensure that you have enough material for the job. Nail or screw every corrugation on eaves overlaps and ridges. The slope of the roof can be calculated from measurements of the rise and run of the roof. Begin every second raw with a sheet cut in half vertically.