Fitting Onduline Roof Sheets

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.

Fitting onduline roof sheets.

Onduline sheet shall be supported by purlins with maximum width distance of 45 cm. Lay sheets in the opposite direction to the prevailing winds. Onduline hr sheets only require a very simple toolkit to install. Minimum recommended roof pitches for onduline roofing sheets are 15.

Onduline roofing is often the first material of choice by enthusiasts and professionals due to its weatherproof qualities a properly fitted sheet is expected to last for fifteen years. Start laying sheets over the gutter with 6 cm overhang maximum. Up signs indicate the direction of the ridge to lay the sheets correctly. 5 screws at each corrugation at the end overlap or eaves.

This is particularly importantant on buildings with high humidity levels. Covering of roofs can be hazardous. 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. 3 screws at first intermediate purlin of the sheet.

The first raw of fixings at eave is located at 2 5 cm from the edge of the roof support osb or purlin. 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.