Screws-nails
Both will fix the sheeting to the wall.
Drive the screw or nail to far beyond the surface will result in scolloping out the back of the sheet ( foot print of screw or nail )
The fixing will then be compromised.
Gerd
Drill through cement sheet into bricks.
Insert spaghetti ( plastic plug ).
Nail with clouts.
Cement sheet is a compressed layers product.
Fixing to one side only can result in delamination.
Gerd
