Hey Ben - Yes, that is exactly what I used them for.
There's 1 1/4 inch below the gasket so probably yes, depending how much the gasket compresses. If you were able to shoot them in at a slight angle, depending on your application, you might be OK.
Depends on the slope, winds, and open exposure.. rough eat 25 per panel including zip screws.
These are galvanized screws and are not compatible with pressure treated wood.
5 fasteners across the width of the panel. 2'-0" o.c. max, closer spacing may be required at edge zones due to local building codes. 10'/2'=5 (+1)=6. 6 rows of 5 screws (minimum) = 30 per 10 ft panel. For roof applications Stitch Screws are recommended on the top of the side lap rib 1'-0" o.c.
The Stitch Screws (Head size) is larger than the wood screws. That is the only size offered.
These are a #9.