Can you use 3/4″ T&G OSB on the flooring on a house that will be on piers? As opposed to 3/4″ T&G plywood?
Ole bud has found 3/4″ T&G OSB for $10 a sheet and was curious if this would pass…..
Thanks
“Some people wonder all their lives if they’ve made a difference. The Marines don’t have that problem.â€
Reagan….
Failure is the condiment that gives success its flavor.
–Truman Capote
Replies
After searching I see that you can do this with OSB!
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.”
Reagan....
Failure is the condiment that gives success its flavor.
-Truman Capote
Does "on piers" mean that it's exposed to the elements from underneath?
Bob's next test date: 12/10/07
10-4......
It will be open 2' all around the house from the ground to the floor joists.
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
My gut instinct says that 2' to grade, plus the 10" of joist should provide plenty of air movement to prevent water damage. My "out of the box" thinking tells me that I should use Advantech and flip it upside down. The top surface has a very tight surface and it resists water. I'd call the manufacturer about that. Bob's next test date: 12/10/07
Thanks, I'll look into it further!
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
This is an example of what I read during the search.
From:
dieselpig <!----><!---->
11/6/2004 7:08 pm
To:
NEXTLEVEL <!----><!---->
(11 of 23)
49826.11 in reply to 49826.10
Actually I was talking about when you said that OSB was a more rigid product on a roof compared to CDX. I've never seen anyone put a boot through a roof sheathed in 1/2" CDX or better, but I've seen it happen several times on roofs sheathed in 1/2" OSB. I also see more telegraphing of the rafters through roofs sheathed in OSB as opposed to CDX. That's what I was getting at. Not your fault if products aren't available in your area....wouldn't hold that against you. Just didn't agree with your roof comparision. I probably could have been more diplomatic about it than I was though, my apologies.
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From:
Piffin <!----><!---->
11/6/2004 8:03 pm
To:
newbuilder <!----><!---->
(12 of 23)
49826.12 in reply to 49826.1
Advantech is THER sjheathing material of choice
Costs are similar to plywood.
osb - Deiselpig already explained there.
If hand nailing, the ply is much easier on you than osb or advvatech because the wood is not as dense as the resin and binders in the other products.
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Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!<!----><!---->
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“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
3/4" t&g OSB can be used as subflooring in place of plywood. It doesn't do well if it gets wet a lot--the seams swell--in fact if it gets wet enough, the whole sheet will swell. I also would have concerns about using it as a nailing substrate for hardwood flooring. But otherwise, we use it all the time with few problems.
I think that is whats to do is nail a hard wood floor in place.
I hear a lot of people speak about the weather qualities of OSB but if it was used as a sub floor it wouldn't be subjected to water. It will have high humidity (south).
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
I dn't know what the fuss here is. Frenchy, says he leaves OSB out in the rain for four years. IT will be fine. So maybe someone should ask him about it. Just a thought.
I dn't know what the fuss here is. Frenchy, says he leaves OSB out in the rain for four years. IT will be fine. So maybe someone should ask him about it. Just a thought.
He coats it in shellac....... :-)
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
shellac might work, but that was not his claim. LOL.
Actually, isn't shellac water soluble?
Priming it before he installs it, would be a good idea, no matter what he uses. (Prime the crawlspace side.)Maybe try another approach with the guy ?Ask him what is the minimum "stuff" he needs, before moving in ?He could probably do a pretty good shell with that bonus check.Does he have to be able to move in the minute the bonus check is used up ?Or can he take his time, and finish the job by buying more materials as he can afford it ?And can he maybe get some of it closer to finish than the rest, and then move in ?
Life doesn't often leave a very easy trail to follow.
No, he can take his time to move in. No doubt if it runs over he will still have to pay for it, in time........
Not the main residence. A lake house, why it is small.
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
Stay clear of the OSB if yer puttin' hardwood flooring on top of it.
J. D. Reynolds
Home Improvements
Pp, Qq
Ferget I ever started this thread! This guy is soooo cheap.......
And crazy......
The other night he was talking about materials, he mentioned using 1/2" OSB on the roof! I was like what? Then I said half laughing, "Are they going to be on 24" centers"? He said yes! He wants to do 24" centers for the walls and floors.
We just got our bonus for this year. Like $10K. He thinks he can build this 800 sgft 2 bedroom 1 bath house, very simple in design for that bonus check.......He knows squat about anything to do with a house in regards to building.
I hate I wasted ya'lls time.....
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
1/2 inch osb on roof is fine at 2' center trusses. Don't be a snob.
He could ride those waves with a surf board.......
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
I don't know why people are still resistent to osb. 15 yrs ago it was a lousy product, today it is probably the best product out there for sheathing. That being said, I would not use 7/16 on the roof, I would insist on true 1/2". Wavwy not when used in combination of h clips.
There are to many carps. who are wedded to the old. It took a long time for ply. to be accepted also.
I don't know why people are still resistent to osb. 15 yrs ago it was a lousy product, today it is probably the best product out there for sheathing. That being said, I would not use 7/16 on the roof, I would insist on true 1/2". Wavwy not when used in combination of h clips.
Now that you mentioned it, that guy mentioned 7/16", I assumed he meant 1/2". I have never stuck a tape on 1/2" to really know the exact thickness. If there was a difference or two sheets that can read 1/2" and 7/16" I am sure he would choose the 7/16" because he can save a penney or two......
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
CDX DF Ply here is not 1/2 , nor is it in most places I have been . It is 15/32" (Check the grade stamps) Most of the houses I have framed in the last 30 years have been 2' o.c. both roofs and walls. Some with 2 x 4 walls. A lot of the houses constructed in Or. over the last 20 have been o.s.b. walls and roofs on 2' o.c. framing. I don't like it , but it is an accepted and more common practice the 1/2" cdx is. Check with a structural engineer as to whether it works.
They can't get your Goat if you don't tell them where it is hidden.
Check with a structural engineer as to whether it works.
That is essentially what I told him to do. Get the plans drawn up and get them stamped. His drawing is on a napkin right now.
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
1/2 inch osb on roof is fine at 2' center trusses. Don't be a snob.
It may work but I wouldn't build a roof with it at 2' centers.
If 2' was so great, why do people build on 16" centers? Your only talking 8" difference........
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
"If 2' was so great, why do people build on 16" centers? Your only talking 8" difference........"If 16" was so great, why do people build on 12" centers? Your only talking 4" difference........If 12" was so great, why do people build with logs? Your only talking 12" difference........I'm telling you that there are millions of homes in MI framed on 24" centers with 1/2" osb for their roof sheathing. I have never heard of anyone putting a foot through it! I've personally laid thousands of sheets without incident. The manufacturers warrant the shingles on these installations. That's the proof in the pudding. Bob's next test date: 12/10/07
I agree and see the light....... :-)
I think you misunderstood what I was saying or the context.
I was responding to framer, he said I was a snob about the 2' thing.
I just wondered "if" 2' was so great, why even build on 16" centers. Let's all forget about the 16" centers. That's what I didn't understand.
My garage is on 24" centers and it has always bothered me to no end, the "plywood" is bowed or let me say this another way, the roof has waves. Yes it works, has been for the 20+ years it has been there but looks like shid to me.
Once again, when I researched this question there were many of the forum which don't like to use OSB vs plywood in this situation. On the roof. 1/2". If I remember correctly they were referring to the strength of the two. Saying plywood was stronger and more stable. Saying that, in my case, I would hate to see my roof with OSB if plywood sagged that much. Again, in my case.
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
your 20 yr old roof was probably built without h clips. The h clips will eliminate the waves.
I wuold have to see your roof, but I suapect your trusses may not be aligned properly
Your right, no clips. I had to go out and look.
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote
there is a big difference in performance between 1/2 and 7/16
H cliips would not eliminate the wave. The H clips only give support right at the edge of the sheet to protect against someone standing at that point. They do nothing to remove teh wave in the sheet two feet away from the edge.
after a couple of breaking / falling thru OSB roofs...
no more...
clips or not it waves and telegraphs...
stay with using it as sheathing and not decking...
those that are consumed with the bottom line have taken justification for a lot things and methods to an art form...
1/2" OSB has it place but it's not on a roof....
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming<!----><!----><!---->
WOW!!! What a Ride!Forget the primal scream, just ROAR!!!
I have just the opisite,. I have fallen through ply. roofs ,but never osb.
I am 6'7" 300lbs
there may be a reason I have fallen through.
The only time I ever saw anyone fall through OSB, was someone jumping from on roof to another.
There still is a lot of 3/8 ply. out there that is really terrible.
I'm 6'4" @ 315....
never fell thru a ply deck...
3/8 cracks but at at least it gives me time to get to better footing...
do you remember Aspenite???
now that was terrible ####....
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming<!----><!----><!---->
WOW!!! What a Ride!Forget the primal scream, just ROAR!!!
the forrunner to OSB. Unfortuneatly that is what most people think when they see OSB>
terrible stuff
deadly too....
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming<!----><!----><!---->
WOW!!! What a Ride!Forget the primal scream, just ROAR!!!
off subject: Have you ever had people discriminate against you because of your size?
heh heh Not for very long.
Peach full,easy feelin'.
yup....
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming<!----><!----><!---->
WOW!!! What a Ride!Forget the primal scream, just ROAR!!!
the biggest problem has always been the little guy with the big man complex trying to prove something...
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming<!----><!----><!---->
WOW!!! What a Ride!Forget the primal scream, just ROAR!!!
1/2" used here on 2' centres also use H clips between truses for extra strength
The H clips insure that both edges of the sheets will deflect uniformly under load. If the H clips aren't used, one sheet could be deflected down 1/4" or so, while the other stayed up and that would loosen the shingle nails and/or tear them. Bob's next test date: 12/10/07
It's not a waste of time. For me, it's an interesting question.I wouldn't laugh too hard about 1/2 on the roof on 24 centers. There are five million homes in MI doing quite well with that setup and they manage to survive huge snowloads too. The wall spacing is allowed on the outside walls if the studs are 2x6. It works okay on interior walls, but I'd be warning the guy about probable waviness. If he likes curves, he'll get them. If he manages to get that house standing for 10k, send him in here....I want to learn from him. Bob's next test date: 12/10/07
When I researched the question I think it was dieselpig mentioned about the difference in 1/2" Plywood versus 1/2" OSB. He said OSB is not strong enough, as in you can step through it versus the plywood as roof material.
That guy was talking about using 2x4's........Not 2x6's.
Here you can't hardly build a two car garage, vinyl siding, entry door, three tab for $6K and that is being conservative. Not only does he have to increase the size, now he has to buy fixtures, terlit, kitchen cabinets, appliances, windows, insulation, interior walls, electricals, flooring, paint, sheetrock, etc.........
I know it was bad to compare a garage to a house but I tried to explain it in those terms to no avail.
“Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Reagan....
Failure is the condiment that gives success its flavor. -Truman Capote