+ Reply to Thread
Results 1 to 6 of 6
  1. #1
    Join Date
    Mar 2011
    Location
    central Michigan
    Posts
    3

    Default Sagging ceiling developing in older house

    Our house is vintage 1956. About three years ago, we replaced the roof, siding, and soffit. Due to some unanticipated rain during the project we had some minor sagging in our bedroom. On the advice of a contractor friend, I pulled the insulation back, let it dry out, then put the dry stuff back. We decided to just wait until the next time we redecorate to fix the puckers around the screws.

    The problem is that in the last month or two it's started to get worse. I've noticed sagging on the other end of the room (it's about 12x9) that was subtle enough that it took me a while to be sure it was happening. Last night I noticed sagging in my son's room, which is on the other side of the same end of the house. I'm concerned that the problem is spreading somehow.

    I went into the attic to see what was going on, and everything was completely dry. I dug down to the drywall where I knew it to be sagging - also completely dry. No evidence of further moisture or old leaks (besides the one I already knew about!), plenty of ventilation, no indication whatsoever that there is a problem. It's been a damp spring (we're in northern Michigan), but it looks like the roof is doing its job.

    The question is: what would cause this to start spreading now? My ****** research indicates that the drywall was put up wrong (sheets aligned long-ways with the beams so each sheet catches three beams instead of five), and I'm not sure of the thickness, but it's held up for fifty years, so why would it go funny now? FWIW, there's about eight inches of blown insulation up there, apparently in two layers, judging by the color.

    Our house was built by the couple we bought it from, who were avid DIYs, but I can't complain too much without thinking about the guy who bought our last house

    Thanks in advance,
    Scott

  2. #2
    Join Date
    Mar 2008
    Location
    nova scotia, canada
    Posts
    1,522

    Default Re: Sagging ceiling developing in older house

    hmm, is the attic space ventilated also was the drywall fastened with the correct number of screws. when fastening drywall to a ceiling its best to use 5 or 6 screws along the 4 ft into strapping or joists where as with hanging board on walls only 4 are needed.

    post some pics so we can get a better idea of what it looks like
    fire up the saw and make some dust

  3. #3
    Join Date
    Dec 2007
    Location
    MN
    Posts
    455

    Default Re: Sagging ceiling developing in older house

    Are you sure you don't have plaster walls with rock lath instead of drywall? Seems odd after 55 years there would be an issue with the wall the rock lath was hung. Sounds like what you see now is a result of water damage from that earlier incident. Maybe the rock lath had been weakend and now is sagging or the ceiling rafters warped when they got wet.

  4. #4
    Join Date
    Mar 2011
    Location
    central Michigan
    Posts
    3

    Default Re: Sagging ceiling developing in older house

    It's definitely drywall. I'll try to get some pictures this week, and I'm also trying to think of a way to verify that it is getting worse and that I'm not just noticing something now that happened three years ago when we had the leak!

    -Scott

  5. #5
    Join Date
    Mar 2011
    Location
    central Michigan
    Posts
    3

    Default Re: Sagging ceiling developing in older house

    OK, here's a couple of pictures. I put them on my own website, since the attachment handler here didn't like them. Hopefully you can see the line of puckers in the middle of the sheet, and the sag line where the seam is. As always, any help is greatly appreciated.

    ruinedfortheordinary.net/media/DSCN0359.jpg
    ruinedfortheordinary.net/media/DSCN0361.jpg

    -Scott

  6. #6
    Join Date
    Mar 2011
    Location
    Tulare, CA
    Posts
    5

    Default Re: Sagging ceiling developing in older house

    I have those funny little indent things all over my ceiling all in a straight line, we figured it was fine because it appears to be where the nails are. I am curious to know what causes this.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •