What’s the built up thickness of 30yr laminated shingles over 15lb felt?
I.E. How long should my roofing nails be so as not to blow through the 1/2″ sheathing but still hold well enough.
This is a simple patio roof and the sheathing is exposed under. Don’t want a bunch o’ nail points exposed from below.
Thanks.
Replies
Bad news..the nails are supposed to go thru.
Spheramid Enterprises Architectural Woodworks
"If you want something you never had, do something you've never done"
How much?
IIRC, 1/4" ..but not 100% on that. There has been many threads here about it.Spheramid Enterprises Architectural Woodworks
"If you want something you've never had, do something you've never done"
Ok, so back to the point--so to speak.
1/2" of sheating, 1/4" out the back. What is the thickness of 2 laminated shingles then? I should get 7/8" ? 1 1/4"?
I'm off to the rental outfit in the morning and will grab a nailer and nails.
Thx
I realize this is a very menial and nitpicky question.. by the way...
I think all Grants guys use is 1.25.
Spheramid Enterprises Architectural Woodworks
"If you want something you've never had, do something you've never done"
Edited 8/23/2007 8:32 pm ET by Sphere
one thing I've done in the past is apply 3/8" beaded plywood to the rafters facing down, then glue and fasten 1/2" ply over top. Then you can shingle it with 1" nails.
Dustin
Can you float some beaded plywooof an inch or so below the sheathing? No way any one-length nail choice will consistantly grab in that thickness of ply, going through variable thickness of two layers of shingles.
Forrest
Um.. No.
This is a pretty basic deal. Not out for perfection.
Can somebody just say, "7/8"!" or something...
I don't care if points show. I just don't want lots of nail showing.
Haven't put down laminated shingles b4.
thx
The nails need to penetrate 3/4" from the top of the sheathing. It's not how far they stick out on the bottom, but how far they stick in from the top. Use 1 1/4" nails for 30 year archys. I normally step up to 1 1/2" for anything thicker than 30 yrs.
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http://grantlogan.net/
"he ot the placed closed down whyyy thhhattt nnooo gooodddd" - sancho
Thank you!
1.25" for the gun, 2" aluminum, loose (hammer) for the ridge cap.
Troy Sprout
"A free people ought not only to be armed and disciplined, but they should also have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government."
-- George Washington
You could put something up in the rafter bays, like ripped sheets of drywall or foam board, for the nail points to penetrate into.
Rebuilding my home in Cypress, CA
Also a CRX fanatic!
Oh, good Lord, no. But I can give him two dollars and an assault rifle.
Take a look on the back side of the bundle wrapper, all that info is there, it's worth the read if this is your first time.
It's important to set the right pressure on your gun so as not to over-drive the nails, in fact you're better off under-driving then set them home by hand.
1 1/4" is appropriate for 30 yr. laminates, but you will have nail ends poking through and showing, no way around it unless you add a layer below(as mentioned before)
Geoff
Long enough they stick through the underneath to catch your head, back, or whatever body part hits against the sheeting when you are working under the roof, and hurts like h*ll.