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AB1970 09-02-2012 07:42 PM

7/16 sheathing/trusses spaced 24"
Looking at buying a house that is probly half finished. the roof is shingled alrdy. the trusses are spaced 24" and the sheathing is 7/16 osb. i would have liked that to be 5/8 osb or truss spaced at 16". Is there something i can do at this point that would make it stronger to eliminate worrying about it?

joecaption 09-02-2012 08:12 PM

There's nothing short of removing all the sheathing and starting over.
Did they at lest use H clips between the trusses?

AB1970 09-02-2012 08:37 PM

not sure if they used the clips or not. gonna hafta take another look. obviously, i'd hate to have to remove the roof. Just wonder how likely it is to become a problem down the road.

joecaption 09-02-2012 08:52 PM

As long as they used the H clips it's a non issue. It's done that way all the time.
Just look at the grade stamp on the sheathing, it should be rated for 24 O/C.

joecaption 09-02-2012 08:55 PM

RJM Build 09-02-2012 09:04 PM

well, usually the plywood will say on the branding what the span is. 7/16 should be 24/16 meaning that it is rated for roof use a span of 24"
I dunno, i would have a heart to heart with the GC.

DannyT 09-02-2012 09:08 PM

if it wasn't for MINIMUM CODE it would probably be thinner.

you can always pass this one by and find another house.

AB1970 09-02-2012 09:28 PM

GC=general contractor? Its a diy deal. there is no GC. the guy was building with help from family/friends. Thats the only thing i see a problem with as far as what he's done so far. Guess i just gotta decide if its a deal breaker. Maybe i'll call some local builders to get their opinions cuz i'm sure region would have a bearing on that.

RJM Build 09-02-2012 10:07 PM

A call to your local building inspector will get you an opinion that you can hang your hat on.

AB1970 09-02-2012 10:20 PM

yea, i think calling an inspector might be the way to go. Thanks everyone very much. I can already tell joining this forum was a good idea.

stokes7 09-02-2012 10:34 PM

Up he 're in Alberta Canada, every house is framed with 7/16", 24" o.c. and H-clips. it isn't an issue at all, that is specifically what the sheeting is designed to do, provided everything is installed properly.

AB1970 09-02-2012 10:41 PM

i'm pretty sure he didn't use h-clips. he told me everything he did like how many anchors, piers, footer size. he has done everything pretty good, but never mentioned h-clips. he did mention hurricane brackets to attach the trusses to the house, but i dont think thats what ur referring too. i had never heard that term til i started reading online. if i understand correctly, the h-clip goes between the sheets of osb?

stokes7 09-02-2012 10:45 PM

Exactly. They are shaped like an "H" about 1/2" wide and 1" long. You place one clip in between each truss space for every row of sheets.

They are designed to distribute the weight across the sheet above or below it and keep the sheets from being uneven at the joints.

joecaption 09-02-2012 10:55 PM

One look in the attic will tell you if he used them or not. There right in plan sight.

Is this guy a licenced contractor or just some DIY who thinks he's a builder?

I sure would hire my own home inspector to look the whole thing over.

Simple things like drip cap on the outside edges of the roof, adding a ridge vent, proper soffit vents, Storm and Ice Shield at the bottom of the roof under the shingle will tell you if he knows what he's doing or just trying to cheap out and make a fast buck.

If there is no H clips I'd pass on the house, I feel that strongly about it.
Ever seen a roof that looks like waves all over the roof? That's the reason.

AB1970 09-02-2012 11:17 PM

he's not a contractor. he's a diy'er. he was building it for himself, but ended up having to move. he's a family friend and i trust him not to intentionally mislead me. its obvious he was trying to build it strong in most ways. he even said he was gonna go 16" on the trusses and someone told him he was goin overkill. so, if its wrong, its an honest mistake. i know a contractor i was gonna hire to help with the finishing. i'm gonna have him check it all out b4 i decide. i'll also look up an inspector and ask what the requirements are here. i really know about snow loads and all that. i'll hafta check into all that. that link didn't have a picture that i saw. was there supposed to be a pic of that clip on it?

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