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  1. #1
    Tricia Martin's Avatar
    Tricia Martin Guest

    Red face Truss nailing - truss integrity

    Hello! I have a question about truss integrity. First, I'll give you a brief background.

    I am in the process of buying a home that was built in 91. My current roofers used smooth nails instead of ring shank nails to re-roof my home. It was existing plywood. The renailed it at 3-4 inch intervals. The inspector said they had to use ring shank nails. So they put ring shank nails in between the smooth nails. Which puts a nail in my truss every 1-2 inches. Plus the original nails that were in the plywood/trusses. My trusses are 2x4s not 2x6s. Should I be worried about the integrity and safety of the existing trusses? Should the trusses be replaced? I guess I'm afraid they might split. And I am afraid the smooth shanks might come back up and damage the shingles.

    Is there a nailing recommendation instruction sheet that comes with new trusses? Maybe something that states what the safe nailing spacing should be?

    Also they did not "stagger" the shingles when they put them on. Is this going to cause me problems?

    I live in Panama City Beach, FL. Thank you in advance for your help.

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  2. #2
    Darrel Hood's Avatar
    Darrel Hood Guest

    Default Re: Truss nailing - truss integrity

    If you have three tab or architectural composition shingles that are not staggered, that is your biggest problem. The roof will leak.

    Darrel Hood
    DILIGENT PROPERTY SERVICES


  3. #3
    Join Date
    Oct 2010
    Location
    Tolland, CT
    Posts
    33

    Default Re: Truss nailing - truss integrity

    missing the truss should have no issue with its stregnth. the plywood how ever is not fastened to the truss which is another issue along with the comment already about water following the nails into the space if the shingles were not installed properly.
    about your comment on the nails being ring shank they do look coated which has similar holding ability to ring shank.

    Mike



    Quote Originally Posted by Tricia Martin View Post
    Hello! I have a question about truss integrity. First, I'll give you a brief background.

    I am in the process of buying a home that was built in 91. My current roofers used smooth nails instead of ring shank nails to re-roof my home. It was existing plywood. The renailed it at 3-4 inch intervals. The inspector said they had to use ring shank nails. So they put ring shank nails in between the smooth nails. Which puts a nail in my truss every 1-2 inches. Plus the original nails that were in the plywood/trusses. My trusses are 2x4s not 2x6s. Should I be worried about the integrity and safety of the existing trusses? Should the trusses be replaced? I guess I'm afraid they might split. And I am afraid the smooth shanks might come back up and damage the shingles.

    Is there a nailing recommendation instruction sheet that comes with new trusses? Maybe something that states what the safe nailing spacing should be?

    Also they did not "stagger" the shingles when they put them on. Is this going to cause me problems?

    I live in Panama City Beach, FL. Thank you in advance for your help.



  4. #4
    chris mcintyre's Avatar
    chris mcintyre Guest

    Default Re: Truss nailing - truss integrity

    Quote Originally Posted by Tricia Martin View Post
    I am in the process of buying a home that was built in 91. My current roofers used smooth nails instead of ring shank nails to re-roof my home.


    Quote Originally Posted by Tricia Martin View Post
    Which puts a nail in my truss every 1-2 inches. Plus the original nails that were in the plywood/trusses. My trusses are 2x4s not 2x6s. Should I be worried about the integrity and safety of the existing trusses?

    A couple of observations:

    1) Be thankful the original nails are there.

    2) I would not worry about the integrity of the trusses because from the picture it appears that not many of the smooth or ring shank nails hit the trusses.

    Quote Originally Posted by Tricia Martin View Post
    Also they did not "stagger" the shingles when they put them on. Is this going to cause me problems?

    Seriously, as others have said this is a big problem. Any pictures?


  5. #5
    Craig Cook's Avatar
    Craig Cook Guest

    Default Re: Truss nailing - truss integrity

    Did the person installing the roof have a license? or any inspections?

    The shingles need to be staggered, and in your are of the state 6 nails per shingle.

    Missed nails will cause potential leak and rot problems if the roof leaks.


  6. #6
    Join Date
    Feb 2010
    Location
    Chesapeake, VA
    Posts
    39

    Default Re: Truss nailing - truss integrity

    If this were a problem on my house, I would break out my caulking gun and put a bead of glue in corner where the the plywood and truss cord.


  7. #7
    Join Date
    Dec 2008
    Location
    Maryland
    Posts
    2,777

    Default Re: Truss nailing - truss integrity

    Tricia,
    Really need a Fla member chime in.

    Non staggered shingle is a major concern, not if just when it will leak.

    What type of inspector did you have?

    Why did they re-nail the plywood? Fla hurricane damage prevention?

    Being in Fla makes a big difference in methods for attachment. Most other states not as much a concern.

    My concern is the plywood deck might be in the weaking of the plywood by having so many nails so closely placed. Sort-of like perforating a paper to make it easier to rear. No idea if Fla has some code for over nailing. You might contact a plywood manufacture and question them on the issue of excessive nailing.

    The truss and nails are less of a concern.


  8. #8
    Join Date
    Mar 2007
    Location
    Orlando, FL
    Posts
    1,340

    Default Re: Truss nailing - truss integrity

    Quote Originally Posted by Garry Sorrells View Post
    Tricia,
    Why did they re-nail the plywood? Fla hurricane damage prevention?

    Being in Fla makes a big difference in methods for attachment. Most other states not as much a concern.
    Re-roof in our parts requires re-nailing the decking or sheathing to a prescribed standard, one of which is 8D ring shank nails installed (mostly) 6"O.C. There are many other requirements that roofers need to follow.

    I see what looks like a staple in the photo, which was the original sheathing attachment. So your original "nails", so to speak, were very thin and didn't penetrate the truss much at all. Your trusses don't need to be replaced because of the extra nails.

    "Staggered" shingles may refer to a racking install, but who knows. Not enough info to state one way or another.

    I suggest you contact Bay County Building Dept. and verify that the re-roof permit was completed and signed off, which means all the applicable steps were inspected.

    Dom.


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