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Re: Purlins to trusses, nails or screws ? [Re: kyron4] #6858633 04/29/20 06:26 PM 04/29/20 06:26 PM
Joined: Dec 2018 Posts: 5,214 Crivitz WI Sprung & Rusty trapper
Sprung & Rusty trapper Joined: Dec 2018 Posts: 5,214 Crivitz WI	Originally Posted by kyron4 When installing 2x4 purlins to the trusses or rafters for meal roofing, which is the preferred method; screws or nails ? Seems screws would have more bite and uplift hold, but nails more shear strength . I main concern is with uplift from the wind. -Thanks I think you mean battons, not perlins. Screws would be the ticket. Last edited by Sprung&Rusty; 04/29/20 06:26 PM. No Jab.

Re: Purlins to trusses, nails or screws ? [Re: kyron4] #6858646 04/29/20 06:34 PM 04/29/20 06:34 PM
Joined: Dec 2006 Posts: 4,149 Pa W Wright Brothers trapper
Wright Brothers trapper W Joined: Dec 2006 Posts: 4,149 Pa	If you started using screws for that at my place you'd be gone. With that said there may be some new fangled screw by now, not at my place lol. Ask your building code officer. Tooo many men that can't run a hammer or gun say screws are ok, they are wrong. My 2 cents, I've built and tore down a few.

Re: Purlins to trusses, nails or screws ? [Re: Sprung & Rusty] #6858666 04/29/20 06:44 PM 04/29/20 06:44 PM
Joined: Sep 2012 Posts: 6,125 Northern Wisconsin,Rhinelander Hodagtrapper Muskrat Master
Hodagtrapper Muskrat Master Joined: Sep 2012 Posts: 6,125 Northern Wisconsin,Rhinelander	Originally Posted by Sprung&Rusty Originally Posted by kyron4 When installing 2x4 purlins to the trusses or rafters for meal roofing, which is the preferred method; screws or nails ? Seems screws would have more bite and uplift hold, but nails more shear strength . I main concern is with uplift from the wind. -Thanks I think you mean battons, not perlins. Screws would be the ticket. Purlins seems to be right. Chris >>In God we trust<<

Re: Purlins to trusses, nails or screws ? [Re: kyron4] #6858711 04/29/20 07:20 PM 04/29/20 07:20 PM
Joined: Dec 2006 Posts: 21,239 SEPA L Lugnut trapper
Lugnut trapper L Joined: Dec 2006 Posts: 21,239 SEPA	Eh...wot?

Re: Purlins to trusses, nails or screws ? [Re: kyron4] #6858780 04/29/20 08:09 PM 04/29/20 08:09 PM
Joined: Dec 2018 Posts: 5,214 Crivitz WI Sprung & Rusty trapper
Sprung & Rusty trapper Joined: Dec 2018 Posts: 5,214 Crivitz WI	I don't know how to post images. I saw an image with the perlin on the inside, and labeled battens on the outside. Basically the same as furring strips.. No Jab.

Re: Purlins to trusses, nails or screws ? [Re: kyron4] #6858790 04/29/20 08:18 PM 04/29/20 08:18 PM
Joined: Aug 2011 Posts: 46,959 james bay frontierOnt. B Boco trapper
Boco trapper B Joined: Aug 2011 Posts: 46,959 james bay frontierOnt.	Correct-purlins support rafters/roof framing down from the ridgepole.More correctly a purlin plate.The strapping for a tin roof is also called a purlin since it is parallel to the ridge. Last edited by Boco; 04/29/20 08:27 PM. Forget that fear of gravity-get a little savagery in your life.

Re: Purlins to trusses, nails or screws ? [Re: kyron4] #6858824 04/29/20 08:55 PM 04/29/20 08:55 PM
Joined: Dec 2009 Posts: 21,739 The Hill Country of Texas Leftlane "HOSS"
Leftlane "HOSS" Joined: Dec 2009 Posts: 21,739 The Hill Country of Texas	Growing up in tornado alley we would lag screw the corners and about every third framing member (truss / rafter- call it what you will) on the leading edge that faced the weather. We would still loose what we called nailers occasionally in a storm so the repair would be deck screws and a few lags. Once we adopted doing that when we built them (whether it be the barn or a lean to) we never lost framing or nailers again. Just the tin occasionally but it took a big one to do it. Nails are the weakest point but I suppose crappy screws would be a close 2nd. Ask yourself this- why don't they nail down the metal roofing and more? Because the wind vibration will yank them out as fast as you can drive them. On the framing, toe nailing (different angles) does help. Unless someone left the doors open at one end, then its gonna be a mess. A wind that comes in has to get out and I study structural failure for a living. Believe me- once it gets in it will get out one way or another. �What�s good for me may not be good for the weak minded.� Captain Gus McCrae- Texas Rangers

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