To make sure you have your corrugated roofing properly spaced allsteel metal roofing has a great guide on measurements in case your corrugated roof didn t come with pre drilled screw holes.
Metal roof panel screws.
1 inch and 2 inch.
Use high quality metal self tapping screws with thin washers to be sure you have a secure seal.
Screws that are installed in the low of the metal roofing panel will result in a more secure connection but will be less weather tight.
Allsteel carries screws in 2 different lengths.
These metal roofing screws include integrated epdm washers micro bit drill points and a wide variety of powder coated paint options to blend in perfectly with your metal roof.
The woodbinder line of metal to wood pole barn screws from st fastening are created specifically to attach metal roof panels to wood substrates.
Quite often the screws are over tightened or under tightened and when this happens it creates leak points.
Your roof will have thousands of screw holes.
Screws are the best way to hold your panels in place so don t ever use nails when installing or replacing screws in your metal roof.
Screwing or fastening down a metal roof is one of the easiest parts of a metal roofing installation but it s also the most problematic.
Screws will not bend or work themselves loose during normal expansion and contraction.
The 1 inch variety is the best all purpose size.