The installation is carried out with the corrugations running down the slope of the roof.
Lay the ONDUPLAST COLOUR sheets starting from the eaves to the ridge, overlapping two corrugations (minimum pitch of 6°). The sheets should be laid in the opposite direction to the prevailing wind.
ONDULINE UNIVERSAL SCREWS should be used to fix the sheets. Drill a hole on the top part of the corrugation, placing the screws on every second corrugation. The diameter of the hole must be 3mm larger than the diameter of the ONDULINE UNIVERSAL SCREW, to allow for structural movement.
The sheets can be fixed to either wood, metal or brick with the ONDULINE UNVERSAL SCREW with integrated washer.