When installing Cladco Roofing Sheets, what part of the Steel Sheeting should you insert the fixing screws into?

Screws are inserted at different spaces depending on what Sheet is being installed.

Cladco Corrugated Roofing Sheets require the screws to be inserted into the crest of the corrugations.

Cladco Box Profile and Tileform Roofing Sheets require the screws to be inserted at the valley of the Profile.

When fixing Cladco Roofing Sheets to your building, is it important to follow the relevant installation guides. These can be found here.