A roof protects the building and its contents from the effects of weather. In most countries a roof protects primarily against rain. Depending upon the nature of the building, the roof may also protect against heat, sunlight, cold, snow & wind.
Roofing is not an improvising job! The choice of solutions for your roofing job is determined by your choice of the most suitable fastener! The consumables you finally choose to use, must be fully compatible with the specific conditions to which the roof will be exposed! The choice of consumables will determine the longevity of your roof!