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-   -   nails through ceiling in attic (http://www.diychatroom.com/f9/nails-through-ceiling-attic-161616/)

mckain0919 10-30-2012 11:28 AM

nails through ceiling in attic
 
2 Attachment(s)
I have some crawl spaces in a spare bedroom and I noticed that alll through the roof there are nail protruding through. I am not 100% sure if they are whats holding the shingles down but my question for you guys is if this is normal for them to be protruding through? I have attached some pictures so you can get a better idea. Thanks a lot! Love this website.

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Windows on Wash 10-30-2012 11:39 AM

Yes. Very normal.

Watch your head.

mckain0919 10-30-2012 11:41 AM

Great! Thank you very much!

Grumpy 10-30-2012 01:12 PM

Normal and as intended, http://www.certainteed.com/resources...arkInstall.pdf "On thinner decks, nails must go at least 1⁄8" (3.2 mm) through the deck."

tinner666 10-31-2012 06:58 PM

Yep! On plywood decks, they must protrude.

Gary in WA 10-31-2012 07:09 PM

It's unanimous (if asphalt shingles above)!

"R905.2.5 Fasteners. Fasteners for asphalt shingles shall be galvanized steel, stainless steel, aluminum or copper roofing nails, minimum 12 gage [0.105 inch (3 mm)] shank with a minimum 3/8-inch (10 mm) diameter head, ASTM F 1667, of a length to penetrate through the roofing materials and a minimum of 3/4 inch (19 mm) into the roof sheathing. Where the roof sheathing is less than 3/4 inch (19 mm) thick, the fasteners shall penetrate through the sheathing. Fasteners shall comply with ASTM F 1667." From: http://publicecodes.cyberregs.com/ic...9_9_par025.htm

I would store any items/electronics in a air-tight container due to the flying fiberglass fibers everywhere in your attic air space,
not even mentioning the possible moisture present...

Gary

CIT 11-02-2012 08:16 PM

nails through ceiling in attic
 
As long as you don't see them protruding through the open eaves outside your house, the nails in the attic are normal.


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