Post Number: 435
|Posted on Wednesday, September 02, 2009 - 06:49 pm: ||
Marc - sounds like 1.5" would be the right length.
Post Number: 18
|Posted on Tuesday, September 01, 2009 - 08:15 pm: ||
Just a quick justification of nail length would be helpful to me. I plan a 1/4"--3/8" slate thickness. Then the formula states twice the slate thickness plus 1" equals proper nail length for a 1 inch wood roof deck. I have a 3/4 inch thick shiplap deck. Would I use a nail less than 1.5 inches long then???? Just want to get it right. Thanks
Post Number: 431
|Posted on Tuesday, August 25, 2009 - 08:41 pm: ||
That issue (nail length) is addressed in this article (scroll down): http://www.traditionalroofing.com/TR5_readers_write.html
Post Number: 53
|Posted on Monday, August 24, 2009 - 02:31 pm: ||
I think "overdriving" nails is an issue here- once the nail bursts through, resistance probably changes and one can then hit it too hard for the changed circumstance/s... Also, a long nail that does not cut when "rippered" out of the roof can cause unfortunate side-effects for repair- a good rule is "no unnecessary length.
Post Number: 215
|Posted on Wednesday, August 19, 2009 - 07:57 pm: ||
The points of the nails should just begin to break the surface of the wood. That is where they have the most holding power, To drive them further will eventually weaken the wood too.
Post Number: 1
|Posted on Wednesday, August 19, 2009 - 03:33 pm: ||
I heard two different stories, that the nail should and should not penetrate the back side of the solid wood 3/4" thick tounge and groved sheathing planking. The existing installation does not. NRA says it should/must. Jenkins, I believe, says it should not. Yes or no and why? Thanks for the help.
(Message edited by Acg on August 19, 2009)