I have always used shorter roofing nails on comp roofing where the soffit was open, so that the nails wouldn’t be seen from below. The manufacture of the shingles, and the code says that the nails must go through the plywood 1/8″ minimum. I have applied many roofs here on the coast and have never had a blow off problem. How do you build someone a nice house and then try to explain why four hundred nails are showing from below?
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can the code be interpreted/modified to acceptance of six nail pattern instead of demanding ridiculosity
Excellence is its own reward!
This one always has escaped me, why if there is only 1/2" of grip from the plywood, would you have to penetrate it, it still only has 1/2" of grip? Is this for idiot inspectors who would doubt you used nails?
though I agree with the response that says to prepare the open soffit with a 'vanity panel' of beadboard or tongue & groove nailed onto relieved rafter tails--
just to be perverse as night owls are wont to be, think about the lowly 1/2" roofing nail.......it's really of shorter stature than that. The pointed end robs the nail shank of the full measure of height, and therefore, the plywood is engaged with a lesser amount of nail shank for resisting withdrawal.
Lil' Acorn......(the nut doesn't fall too far from the tree......)
I agree, a 1/2" roofing nail can not possibly have much holding power, just because one hasn't failed (blown off) yet, does not mean it won't happen tomorrow.
Bill
Phillipham,
If we have an open soffit, let's say we use 1x6 beadboard, I'll rip the top of the rafter overhang 3/4" or the length of enough full pieces of 1x6 to cover the overhang.
Nail the 1x6, then nail (5/8" roof sheathing, Code in NJ) on top of the beadboard, now you have 1-3/8". You won't see any nails.
Unless I'm missunderstanding what your saying, there should be no reason why you should see the roofing nails with an open soffit.
Joe Carola