Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 08-11-2009, 12:33 PM   #1
Newbie
 
Join Date: Aug 2009
Posts: 6
Share |
Default

Ledger Bolts: Why not "nuts out"?


I'm attaching the deck ledger to the rim joist, which is accessible from both sides. So that means I can use through bolts and nuts. Made me wonder: Why, in all of the photos I have seen of this type of installation, are the bolts installed with the heads outside on the ledger exterior and the nuts on the rimjoist interior? If the inside nuts ever come loose from the wood relaxing a bit, they could conceivably work their way off, or at least be difficult to retighten (lockwasher or not). (I should mention that I've lived here twenty years and hope to make it another twenty. And we have small quakes.)

Not only that, how can you wrench-tighten a carriage bolt head after it's installed and the nut end is inaccessible? On the other hand, if the nuts are on the exterior, the bolt head is captive inside the rimjoist and the nuts can be tightened outside, if necessary.

Or, is it all just a matter of carpentry aesthetics?

metlc is offline   Reply With Quote
Old 08-11-2009, 12:50 PM   #2
Member
 
RippySkippy's Avatar
 
Join Date: Feb 2007
Location: Ames, Iowa
Posts: 1,233
Default

Ledger Bolts: Why not "nuts out"?


Many use lag bolts for this application, so there wouldn't be any nuts involved.

__________________
when it comes to breakfast, the chicken is dedicated, the pig is committed.
LMASD
RippySkippy is offline   Reply With Quote
Old 08-11-2009, 01:05 PM   #3
Member
 
Join Date: Jul 2007
Posts: 1,590
Default

Ledger Bolts: Why not "nuts out"?


In ICF construction J bolts for ledgers are often embedded in the concrete wall when poured which requires the nut to be on the outside so I doubt it makes a difference. I also doubt that the nuts will become loose and fall off over time.

Does your AHJ have an opinion? (AHJ= Authority Having Jurisdiction= Inspector)
jogr is offline   Reply With Quote
Old 08-11-2009, 01:47 PM   #4
Member
 
concretemasonry's Avatar
 
Join Date: Oct 2006
Location: Minneapolis/St. Paul, Minnesota - Latitude 45.057 Longitude -93.074
Posts: 3,751
Default

Ledger Bolts: Why not "nuts out"?


If you are forced to use a ledger attachment instead of free-standing, many places do not allow lag bolts. What you must do is sure it is properly flashed and sealed, starting under the moisture barrier.

Dick
concretemasonry is offline   Reply With Quote
Old 08-11-2009, 01:59 PM   #5
Old School
 
Willie T's Avatar
 
Join Date: Jan 2009
Location: St. Petersburg, FL Minds of moderate caliber ordinarily condemn everything which is beyond them.
Posts: 3,634
Default

Ledger Bolts: Why not "nuts out"?


Dick gave you the answer, though I think it needs a bit more explanation.

The flashing you need to use over the attachment bolts will neatly and cleanly clear smooth, embedded carriage bolt heads. Not so, if you have the other end with the nut, washer, and protruding bolt end shoving the flashing up and out of the way.
__________________
"True eloquence consists in saying all that is necessary, and only that which is."
François Duc de La Rochefoucauld
Willie T
Willie T is offline   Reply With Quote
Old 08-11-2009, 04:32 PM   #6
Registered User
 
Join Date: Mar 2009
Posts: 9,968
Default

Ledger Bolts: Why not "nuts out"?


If you put the nut outside, it could easily rust. The tightening torque you apply removes the galvanized coating from the bolt treads and/or the nut threads. Then if it gets wet, it will rust. (Unless you used stainless steel). Run a continuous bead of caulking along the bottom, outside edge of the ledger (to act as a drip lip) if installed above siding. Be safe, G
Gary in WA is offline   Reply With Quote
Old 08-12-2009, 12:51 AM   #7
Newbie
 
Join Date: Aug 2009
Posts: 6
Default

Ledger Bolts: Why not "nuts out"?


Thanks for the timely replies.

There seems to be a variety of opinion on flashing systems, ledger fasteners and their schedules. One common theme is that thru-bolts are nearly twice as effective as lag bolts. So that's what I'm using, where possible, every 24 inches.

In my case, the ledger flashing is more of a "head" flashing, which bends out over the front of the ledger and down about 1-1/2 inches. As the fasteners are 2-1/4 inches down the ledger, they are not directly involved with the flashing, although I suppose a kick-edge on the flashing would help divert water away from a lower-profile (carriage bolthead) connector.

As I'm not too keen on stacked washers as ledger spacers, the ledger itself is spaced 1/4" out from the Tyvek shearwall using Simpson bearing-plate washers wrapped with strips of Grace black flashing that is stapled to the ledger to secure them for installation, protect them and "gasket" the bolt connections.

The ledger flashing is a secondary flashing; the topmost flashing starts at the wall, under the furred-out siding (and Tyvek), juts out to cover the first half-course of decking (2-1/2 inches), then bends down to divert water to the plastic Deck Drain hung under the joists.
metlc is offline   Reply With Quote
Old 08-12-2009, 04:14 PM   #8
Registered User
 
Join Date: Mar 2009
Posts: 9,968
Default

Ledger Bolts: Why not "nuts out"?


This will answer most deck building questions, especially on spacing ledger fasteners: http://www.awc.org/Publications/DCA/DCA6/DCA6.pdf
And you want the deck to last. My personal favorite: http://books.google.com/books?id=1gg...num=3#PPA31,M1
No location mentioned: http://www.soundfootings.com/pdf/US_...t_DepthAVG.pdf

I encourage you to get a building permit, if not have one already, as it is the minimum safety standards.
Be safe, G

Gary in WA is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
garage loft; ledger to ledger joists? nsixbdg Building & Construction 10 12-26-2011 06:29 PM
Technique for accurate placement of ledger Fire4Effect Building & Construction 2 07-06-2009 11:55 AM
Cracked ledger board on front porch King_Doodle Building & Construction 20 06-03-2008 09:16 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.