3 screws at first intermediate purlin of the sheet.
Fitting onduline roof sheets.
14 screws should be drilled per sheet.
The first raw of fixings at eave is located at 2 5 cm from the edge of the roof support osb or purlin.
The roofing sheets are composed of a single layer of organic fibres melded with bitumen through an intensive pressure and heat process giving the final product a highly durable finish.
5 screws at each corrugation at the end overlap or eaves.
Covering of roofs can be hazardous.
This is particularly importantant on buildings with high humidity levels.
Insulation can also be easily incorporated too providing ventilation is provided below the onduline sheet design advice should be sought from the manufacturer of the insulation products in this case.
Minimum recommended roof pitches for onduline roofing sheets are 15.
Onduline sheet shall be supported by purlins with maximum width distance of 45 cm.
Thanks to their reduced weight 4 kg m and their great mechanical flexibility onduline hr sheets can be installed on an extremely diverse range of lightweight roof structures.
A hammer for securing the sheets and a band saw for.
A simple and flexible roofing system.
Lay sheets in the opposite direction to the prevailing winds.
Start laying sheets over the gutter with 6 cm overhang maximum.