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Old 01-30-2012, 05:38 PM   #61
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Wavy roof! Need opinions/advice


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Originally Posted by gopher59 View Post
well, all I can say is this, we have engineers in our family, not gonna say if I am one or not- noyb- Most every REPUTABLE builder knows darn well not to put 5/8" 1/2" and most definitely not 7/16 (which is even less than 1/2") on 2' centers. Did you not graduate high school math class?
Did you ever see the span ratings stamped on the back of the sheets? I'm assuming someone had to engineer those ratings, no?

I'm not saying a thicker sheet isn't better, but I know what I know and code is code. I've never seen anything more than 5/8 on a roof with 2' centers and 99 out of 100 are 1/2" ply or 7/16 OSB.

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Old 01-30-2012, 06:35 PM   #62
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This may be helpful to resolve the on going debate with the gopher

http://osbguide.tecotested.com/pdfs/en/el807.pdf

Note page #2 span ratings table

Mark
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Old 01-30-2012, 06:50 PM   #63
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Originally Posted by gopher59
So many I can't count! And lots of barns, as well. I have never put 7/16 on 2', nor will I ever. I never use less than 3/4osb or plywood on 2'. My preference is 16"oc 2x6" rafters, braced to keep them straight and 5/8" sheeting. Then 30lb felt, drip edge, galvanized flashing or thick aluminum, shingles hanging over 1", preferably before the drip edge, I put aluminum coil over the fascia and gutter boards, then I run seamless gutter, use gutter hangers and larger downspouts, but I don't know how to build a roof, what a joke!
I apologized earlier, but I'm about to lose it on you.
EVERY NORMAL CARPENTER PUTS EITHER 7/16" OSB OR 5/8" PLY ON 24"O/C RAFTERS. YOU'RE THE ONLY PERSON ON THIS WHOLE FORUM THAT DISAGREES.
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Old 01-30-2012, 06:54 PM   #64
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Gopher---duck out of this thread---no more posts in this thread for you--you are spoiling the post for the homeowner---

Do it or I'll do it for you-----MODERATOR---oh'mike---
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Old 01-30-2012, 07:13 PM   #65
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Sorry for the interruption---please carry on---

Any more post on this thread by gopher will mean a temporary loss of membership---Mike---
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Old 01-30-2012, 09:02 PM   #66
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Wow - just got back on my computer after a really long day... Sorry to see you guys had to deal with an unruly poster. Thanks to the mod for taking care of things and getting us back on track.

I really appreciate everyone's input and feedback. It is because of this forum, and the people on it, that we are finally starting to get some good answers that we can run with.

I got the following in an email earlier today from the builder. I believe they are trying to stall as long as possible so that they are that much closer to their 1 year warranty expiring:
"the roof evaluation will take place when it is 80 degrees plus for a few days"
The builder said it has to be really warm for several days for them to get a true sense of what is going on. I know they are just stalling. If you have read our thread on our HVAC issue, we are in the process of bringing in an attorney to fight for our rights.
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Old 01-30-2012, 09:06 PM   #67
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Originally Posted by stickner
Wow - just got back on my computer after a really long day... Sorry to see you guys had to deal with an unruly poster. Thanks to the mod for taking care of things and getting us back on track.

I really appreciate everyone's input and feedback. It is because of this forum, and the people on it, that we are finally starting to get some good answers that we can run with.

I got the following in an email earlier today from the builder. I believe they are trying to stall as long as possible so that they are that much closer to their 1 year warranty expiring:

"the roof evaluation will take place when it is 80 degrees plus for a few days"
The builder said it has to be really warm for several days for them to get a true sense of what is going on. I know they are just stalling. If you have read our thread on our HVAC issue, we are in the process of bringing in an attorney to fight for our rights.
Sorry for everybody getting off topic.
Good luck with your plight.
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Old 01-30-2012, 09:27 PM   #68
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Sorry for everybody getting off topic.
Good luck with your plight.
No worries titan. This thread has helped me out more than you realize!!! It has been incredibly valuable!!
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Old 01-30-2012, 09:31 PM   #69
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It's supposed to get wet?! What are you on?
I should have been a bit more descriptive with my post.

Sub grade O.S.B will not withstand moisture very well and will swell.Premium APA O.S.B is a better product that has higher levels of water repelling ability.
I believe it is Exp 1.I might be wrong.It can handle several weeks of exposure.

But exposure means normal dews,frosts and a couple of rains.I don't think they call Seattle type rains or monsoon type or leaving the plywood submerged for any period or nestled in mud normal.Hahahahaha

As far as the recommendation for O.S.B to see some moisture it is true.I found it within an analysis report from the APA.I will find it and post the link.

Some have said that the premium O.S.B can be left dried in for 6 months providing a sealer is applied on any cut joints.But as with anything materials have a limit and they all have a line that once crossed exceeds the materials capabilities.

To the OP do you by chance have a material delivery list from the supplier that delivered the O.S.B?.,Perhaps you have a low grade O.S.B product.

Geeez.,I always miss the Diy drama.,.,This was the first thread I have ever read on the internet where the moderator told someone not to post anymore.

Generally that approach isn't used.,Believe it or not I have been banned from a forum.,Hahahahaha.,imagine that.

Showing some true professionalism Oh'Mike.I never got a warning.,I tried to log on and was blocked only to sit a wonder.,what ever could I have done ?

Last edited by Roofmaster417; 01-30-2012 at 09:34 PM.
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Old 01-30-2012, 09:38 PM   #70
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To the OP do you by chance have a material delivery list from the supplier that delivered the O.S.B?.,Perhaps you have a low grade O.S.B product.
This is the product they used:

Main Web Site
http://www.solarbordosb.com/

A bunch of documents and extra info:
http://www.solarbordosb.com/documents
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Old 01-30-2012, 09:40 PM   #71
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To the OP do you by chance have a material delivery list from the supplier that delivered the O.S.B?.,Perhaps you have a low grade O.S.B product.
And again, as I stated earlier, pretty much every house in our area of the subdivision has the same looking roof problem. Maybe 30-40 houses in total...
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Old 01-30-2012, 09:42 PM   #72
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Originally Posted by stickner View Post
I got the following in an email earlier today from the builder. I believe they are trying to stall as long as possible so that they are that much closer to their 1 year warranty expiring:
"the roof evaluation will take place when it is 80 degrees plus for a few days"
The builder said it has to be really warm for several days for them to get a true sense of what is going on. I know they are just stalling. If you have read our thread on our HVAC issue, we are in the process of bringing in an attorney to fight for our rights.
Well, you don't have to worry about that problem going away when the temps rise, I promise you that. Make sure you document everything carefully. Phone calls, letters, E-mails....

Make prints of those pics and mail them to yourself to have a postmark date on the package. Keep the package sealed unless needed in court to prove the issue existed before the warranty expired.
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Old 01-30-2012, 09:50 PM   #73
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Found this in the document.

http://www.solarbordosb.com/wp-conte...et_March10.pdf

Exposure to Moisture – All rated Norbord OSB has an Exposure1 bond classification. Although panels should not be directly exposed
to the weather or moisture on a continuous basis, the Exposure 1 on Norbord OSB indicates that unprotected exposure during ordinary
construction periods will not adversely affect the structural properties. Exposure to adverse moisture conditions could result in edge
swell. Sanding may be required to level uneven edges prior to finish-covering application.
Exposure to certain moisture conditions could
also result in development of mould and mildew.


Also...
Solarbord on Roofs

  1. Make sure rafter alignment is uniform and square.
  2. Allow a minimum of 1/8” spacing between ends and edges of panels.
  3. Check local building codes for roof ventilation requirements.
  4. For maximum performance, protect Solarbord panels from moisture prior to and during installation. Exposure to certain moisture conditions could result in development of mould & mildew.
  5. Cover roof as soon as possible with shingle underlayment (or #15 roofing felt) to protect panels from weather. If construction delays are anticipated, cover with #30 roofing felt.
  6. Place Solarbord Radiant Barrier Sheathing panels on rafters – foil side facing down, toward the attic air space.
  7. Do not allow insulation or other materials to come in contact with foiled surface of Solarbord. Maintain minimum 3/4” airspace. The use of baffles may be required to maintain the air space.
  8. Use 8d nails to fasten Solarbord panels to rafters at a minimum of 6” on center at supported panel ends and edges, and 12” on center at intermediate supports. Check your local building codes.
  9. Cover roof as soon as possible with shingle underlayment (or #15 roofing felt) to protect panels from weather. If construction delays are anticipated, cover with #30 roofing felt.
  10. Allow Solarbord Radiant Barrier Sheathing to adjust to atmospheric conditions before installing shingles. (Heavier weight or textured shingles provide better performance than lightweight fiberglass shingles).
  11. Fastener spacing*
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Last edited by loneframer; 01-30-2012 at 09:53 PM.
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Old 01-30-2012, 09:52 PM   #74
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Well, you don't have to worry about that problem going away when the temps rise, I promise you that. Make sure you document everything carefully. Phone calls, letters, E-mails....

Make prints of those pics and mail them to yourself to have a postmark date on the package. Keep the package sealed unless needed in court to prove the issue existed before the warranty expired.
Good advice. We have been putting together our "book" of issues with all documentation. Good idea on mailing myself some information/pics. I am definitely going to do that.

More follow-up phone calls with attorneys tomorrow. I think several are really chomping at the bit to take our matter...
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Old 01-30-2012, 10:00 PM   #75
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And again, as I stated earlier, pretty much every house in our area of the subdivision has the same looking roof problem. Maybe 30-40 houses in total...

Looking more and more like an installation issue with improper spacing. That's not absolute though. Still could be several other causes, such as the gapping recommendations not being sufficient.

I had a builder read me the riot act one time because I gapped all my wall and roof sheets with 8D nails. Three days in the humid salt air and the gaps were gone....

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