Separation between sheathing OK??

[gbrasseur]

Hi all,

This house had a new roof installed. My question is, do you think that this separation in the sheathing where it "meets" is OK? There is not a ridge vent (has Gable and soffit vents). Your input is appreciated!

[gbeaumont]

Hi Greg,

Personally I am rarther more concerned about the big hole in the last picture as the shingles in this area are not adequately supported. The ridge looks fine to me

Regards

Gerry

[gbrasseur]

Originally Posted by gbeaumont

Hi Greg,

Personally I am rarther more concerned about the big hole in the last picture as the shingles in this area are not adequately supported. The ridge looks fine to me

Regards

Gerry

Gerry,

Those were roof vents that were added with new roof. I thought they were OK. Am I mistaken?

[ckratzer]

I'd be more concerned about the aghmm...Trusses? that don't meet at the peak.
Please tell me they are homemade.

[gbrasseur]

Hi Cheremie,

Didn't notice that until you ponted it out. I think they may be done when the house was re roofed? I did think it was odd they used 2x3 instead of 2x4's for the supports

[gbeaumont]

Originally Posted by gbrasseur

Hi Cheremie,

Didn't notice that until you ponted it out. I think they may be done when the house was re roofed? I did think it was odd they used 2x3 instead of 2x4's for the supports

Sorry Greg the hole just looked like......... well,......... a hole, you didn't mention roof vents only gable and soffitt, anyway the trusses appear to have a manufacturers stamp, so I would assume them to be properly engineered for the application

Regards

Gerry

[gbrasseur]

Gerry,

My fault not mentioning the roof vents.....they were added when the new roof was put on.

[ckratzer]

Now that I see the whole truss I do see the stamp.

[dhelm]

In terms of the sheathing not meeting, in my opinion it is not a problem. It has nothing to do with the integrity of the structure. It is a non-issue.

[aroncone]

Greg,

In addition, the following picture, 100_4190 (Small).JPG, I have not seen any lateral bridging/blocking or permanent bracing added in the top & bottom cords or in the web plane. The roof sheathing and ceiling finishes may provide a part of the bracing, but web plane bracing should be added at the vertical & diagonal webs.

If you have already called this out, please disregard post.

[Scott A. Figert]

I have installed this style truss before but only on garages with no intention of installing ceilings. They are cheaper that house trusses.

[Kenton H. Shepard, CMI]

Sheathing not a problem at all. When a ridge vent is installed you'll see sheathing cut back up to three inches, so a half-inch gap is fine. Trusses are fine too.
Sometimes truss companies will do strange-looking things, but as long as you see pressure-rolled gangnails and nothing has been field-altered, it should be fine.

[Marcel R. Cyr]

Originally Posted by aroncone

Greg,

In addition, the following picture, 100_4190 (Small).JPG, I have not seen any lateral bridging/blocking or permanent bracing added in the top & bottom cords or in the web plane. The roof sheathing and ceiling finishes may provide a part of the bracing, but web plane bracing should be added at the vertical & diagonal webs.

If you have already called this out, please disregard post.

You are right Aurelio.

There is no evidence of lateral bracing on the web members nor is there evidence of temporary lateral members that are usually left in place after erection of the trusses.

Another thing that caught my eye in the pictures was that not having seen trusses before with a square cut at the ridge, the crimp pressure plates appear to have been nailed or screwed.

Anyone seen this before?

Marcel
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[Kenton H. Shepard, CMI]

Originally Posted by aroncone

Greg,

In addition, the following picture, 100_4190 (Small).JPG, I have not seen any lateral bridging/blocking or permanent bracing added in the top & bottom cords or in the web plane. The roof sheathing and ceiling finishes may provide a part of the bracing, but web plane bracing should be added at the vertical & diagonal webs.

Catwalk is visible on the bottom chord way off to the right. I've never seen top chords braced, since theiy're held by sheathing. Diagonal and lateral bracing are called out by the engineer. I wouldn't call them out as missing just because I didn't see them. Not without a set of plans. These look like just more trusses to me, not other than house trusses. Looks OK to me.

[Marcel R. Cyr]

Sorry Kenton; ha. ha.

This might help understand.

www.woodscience.vt.edu/researchpapers/bracing.pdf

http://www.gov.mb.ca/labour/safety/roofguide.html

pahi.org/.../sitebuilderfiles/roof-truss-erection-guidelines.pdf

http://www.trussec.com/handling.html

Up here, I was brought up to have lateral bracing whether they were stick built or later roof trusses.
Not so many on homes, but most Commercial Roof Trusses come with tags on the truss chords that require permanent lateral bracing.

This is one item that the AHJ will look for upon CO request.
If a structural Engineer is involved, that is the first thing he will look for.

For the little home, I guess they just blow in the wind and fall apart. ha. ha.

Marcel