R-Panel Roofing ... Nail/Screw where?

[beppington]

So ... the storm that passed thru took my neighors barn ... roof panels went off like a greased pig, screwed on, left the purlins. The barn on the same place about 25 yards away nailed on stood fine ... and it was 20 years older.

I know ... wind damage seems to pick and choose ?

Definitely. Strong winds here a week or two ago, knocked over 3 healthy oak trees in the middle of a thick forest of healthy oak trees. Why those 3? :confused2:

 

[BRBurns]

I've done 2 barns with it. I used screws on the flats. I did not predrill, but it does leave a pit of a burr. SS screws going into treated lumber (predrill those). I did not screw the overlap, but had a screw on each side of the overlap ridge. The rest of the ridges I only used 1 screw.

 

[allenr]

Dunno wether you've got the screws yet, but make sure the coating is Class 3 or, better yet Class 4.

I've got a 100 x50 foot shed where the screws used were the gold passivated Class 2 and they all need replacement. I've bought the screws but now to find the time!