If you asked two installers whether they pre drill metal roofing sheets prior to installation you would likely get two completely different answers.
How to install tin roofing sheets.
The screws that are used to attach the metal roofing are self drilling screws.
How to install a tin roof on an outbuilding.
Secure the sheets into place with screws.
Metal roofing can also be significantly more expensive than pvc.
Then nail the metal edging by using a hammer and roofing nails.
For exposed fasteners avoid over tightening the fastener.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
The tin is.
This means that the screw will drill its own hole through the metal roofing panel and into the metal or wood substrate.
Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.
Once the first sheet is in place you need to install the remainder of the lowest row of corrugated metal roofing.
Secure the slats with 3 inch metal to wood screws.
Install slat boards to the roof so that you can easily attach the new tin.
Use your neoprene washer head screws to secure the metal to the sheathing.
Space the screws about 12 in 30 cm apart.
Most metal shingles will be attached to the roof using metal shingle.
The sheets should overlap by at least four inches add a bead of caulk where they overlap and at the other end of the building ensure there s an overhang of two inches.
One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms.