Rockbadchild
Elite Member
I was told that if the roof deck is OSB, the nails have to be able to penetrate though the OSB to hold sufficiently (sp?). Never had anyone in the industry confirm that statement. And yes I had a shingle roof installed in mid November in northern Michigan on the windward side dormer that did not seal down. I had shingles coming off that first winter and for years later. Jon
It is possible although never heard that statement. The standard nails length is 1 1/4 inch nothing less and that's all I use. 2 inch if its a lay over but I always refuse to do layovers but with these nail length it would always go through since the usual OSB thickness for roof is less then 1/2 inch ... and minimum of 5 nails per shingles 6 if its in a high wind area...