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  1. #1
    Stephen G's Avatar
    Stephen G Guest

    Default Bulge at rim joist...

    I have run out of ideas that wont cost money. The bulge in the siding is firm, and you can feel it with your hand. I started on the bottom and slid my hand up the siding and there is something stopping the siding from laying flat. My measurement have it about where the rim joist would be. The home has trusses on 16" c....Nice home a little fat around the middle

    No idea without pulling off a row and slicing the wrap underneath.

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  2. #2
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    Default Re: Bulge at rim joist...

    closer picture of defect please and is that vinyl siding--we are talking about siding eh


  3. #3
    Stephen G's Avatar
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    Default Re: Bulge at rim joist...

    well, thats as good as it gets pic wise. You gotta see macro...
    It is vinyl siding, however, there is 'something' causing said siding from laying flat against the sheathing. The pic shows the obvious bulge in the middle right. I pressed against the siding and there is something there. I run my hand up.
    I have banged enough nails to know whats supposed to be right behind the siding, but when you run your hand against it somthing is there, bulging is the only description I can use, like they scabbed a 5/4 deck board on the front during the build and forgot to remove it???And the siding crew just did what they do, install siding.
    I explained that it doesnt fit into normal building practices, until disclosure or open the wall to have a peak occurs I have limited explanation, and they wont be good.

    Quote Originally Posted by CHARLIE VAN FLEET View Post
    closer picture of defect please and is that vinyl siding--we are talking about siding eh



  4. #4
    Stephen G's Avatar
    Stephen G Guest

    Default Re: Bulge at rim joist...

    this help..

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  5. #5
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    Default Re: Bulge at rim joist...

    I have no idea whether this might be the cause (probably not), but I've seen vinyl siding bulge out because it was the second layer and the siding underneath (fiber cement) had broken off.

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  6. #6
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    Default Re: Bulge at rim joist...

    Thats from compression in the house when new construction. A typical 2 story building will shrink and compress 1" inch in the first year. The sider if he is good will really pull up and stretch the vinyl at the first and second floor line to compensate for the shrink.

    next problem if the sheathing is tight, OSB is real bad if not spaced per manufacturer, but during the building shrinkage it can bulge the siding and the box joists /floor joist are the biggest locations for the shrinkage

    Joseph Ehrhardt
    Building Forensic Specialist LLC

  7. #7
    Stephen G's Avatar
    Stephen G Guest

    Default Re: Bulge at rim joist...

    Client is talking with the agent about this, if the HO really wants to sell, they might allow a row or two of siding to be removed and we can slice open the wrap to have eyes on. Wouldnt take long and may not crack the siding to much.
    Until that happens I will have to let my overactive imagination play with this



    Quote Originally Posted by Joseph Ehrhardt View Post
    Thats from compression in the house when new construction. A typical 2 story building will shrink and compress 1" inch in the first year. The sider if he is good will really pull up and stretch the vinyl at the first and second floor line to compensate for the shrink.

    next problem if the sheathing is tight, OSB is real bad if not spaced per manufacturer, but during the building shrinkage it can bulge the siding and the box joists /floor joist are the biggest locations for the shrinkage



  8. #8
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    Default Re: Bulge at rim joist...

    Stephen

    Thats the best recommendation to have a few courses taken off.

    In most cases the vinyl has been nailed to tight to the substrate which prevents the vinyl from expanding and contracting in the heat of the day, thus it buckles.

    Incidentally what compass direction is the front of the house facing?


  9. #9
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    Default Re: Bulge at rim joist...

    its vinyl, take a panel popper and release the locking mechanism and look behind to see if the plywood is buldged, if the plywood or osb was installed horizontal, measure up 8' feet and if that seam lapped over the box joists onto the upper floor, that buldged it.

    Thats a raised ranch, so the living space below grade is constructed with a half framed wall, so when the carpenter sheathed the wall, scale off the sill the first 4 feet and then the second row of sheating looks like it laps over the box beam. You state trusses, are you sure floor trusses? open web? or you assume because there was roof trusses?TJI floor joist are more stable but the plate material and studs that support the assembly still shrink. Ive done my share of these and my moneys on the bulged sheathing from the lap across the plate lines. Dont think because you pull the few rows of siding off, that its going to line back up, you will end up pulling the siding off and re installing. My opinion based on my experience.

    Joseph Ehrhardt
    Building Forensic Specialist LLC

  10. #10
    Stephen G's Avatar
    Stephen G Guest

    Default Re: Bulge at rim joist...

    I try not to make assumptions. The trusses as seen from basement, and trusses as seen from hatch see pic.

    The home faces North East, meaning that the rear shingles need to be replaced . Budget for replacement.


    Quote Originally Posted by Joseph Ehrhardt View Post
    its vinyl, take a panel popper and release the locking mechanism and look behind to see if the plywood is buldged, if the plywood or osb was installed horizontal, measure up 8' feet and if that seam lapped over the box joists onto the upper floor, that buldged it.

    Thats a raised ranch, so the living space below grade is constructed with a half framed wall, so when the carpenter sheathed the wall, scale off the sill the first 4 feet and then the second row of sheating looks like it laps over the box beam. You state trusses, are you sure floor trusses? open web? or you assume because there was roof trusses?TJI floor joist are more stable but the plate material and studs that support the assembly still shrink. Ive done my share of these and my moneys on the bulged sheathing from the lap across the plate lines. Dont think because you pull the few rows of siding off, that its going to line back up, you will end up pulling the siding off and re installing. My opinion based on my experience.


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  11. #11
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    Default Re: Bulge at rim joist...

    How do you stretch vinyl siding?


  12. #12
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    leonardo, new jersey
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    Default Re: Bulge at rim joist...

    stretch vinyl is a figure of speech, when you lock it in the bottom slot you pull up hard on it as you or another worker nails it, its does flex or stretch the bottom of the panel

    Joseph Ehrhardt
    Building Forensic Specialist LLC

  13. #13
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    Default Re: Bulge at rim joist...

    It could be from a lack of nailing in the sheathing. When the framers stand the second floor wall up they let the sheathing overhang 8-10 inches to connect with the first floor frame.

    At some point someone need to go around the building and nail off the sheathing. This may not have been completed resulting in the bulging in your picture.

    Only way to know for sure is to remove the siding.


  14. #14
    Stephen G's Avatar
    Stephen G Guest

    Default Re: Bulge at rim joist...

    Peter, hopeully that is the extent of the problem. I may never find out. Client speaks to HO today, so maybe, just maybe I get a phone call asking me to come have a peek...

    I will post any follow up...

    thanx gang...




    quote=Peter Russell;193721]It could be from a lack of nailing in the sheathing. When the framers stand the second floor wall up they let the sheathing overhang 8-10 inches to connect with the first floor frame.

    At some point someone need to go around the building and nail off the sheathing. This may not have been completed resulting in the bulging in your picture.

    Only way to know for sure is to remove the siding.[/quote]


  15. #15
    Phil Brody's Avatar
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    Default Re: Bulge at rim joist...

    I'll bet you there isn't any spacing between the plywood causing the bulging. Just nailing it off won't help. It needs a relief cut maybe 2 depending on how much it bulged, then re nailed. It's not a big deal.


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