Roofing nails also called clout nails are usually used in the roof.
Carpenters prefer screws over nails for the simple reason that the threads on screws prevent the screw from being dislodged. This provides a stronger joint. ... If it is not, for example in paneling and framing, nails are used as it can be done faster, especially with a nail gun.
Rubber roofing is extremely fire resistant and because you install the roof without a torch (instead using a rubber roofing adhesive) installation is very low risk compared to torching on felt.Mar 18, 2019