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  1. #1
    Join Date
    Jul 2011

    Default What is this? Cardboard??

    I am in the process of redoing my bathroom. I started to pull off the old wallpaper and to my horror, I realized the ceiling was wallpapered as well when I pulled on the paper on the wall, the ceiling came down too.
    Behind the wall paper is a thin cardboard like wall...the ceiling is the same material.
    Anyone have any idea what it could be?
    I can take a picture later and post it, if that is allowed on here.
    The nails they used were not covered and the rust was coming through on the wall paper. The corners were not finished out, just big gaps...the ceiling also has huge gaps where they did not take the material to the edge of the room.
    It looks like a mess!!!
    I wanted to paint, but not sure if the "cardboard" will hold up to the moisture of showers the 5 of us take in there.
    May just have to repaper it, not sure what to do!

  2. #2
    Join Date
    Jul 2010

    Default Re: What is this? Cardboard??

    It could be a lot of things. Cardboard? masonite? but it's immaterial, because I suggest to rip it out, down to the framing, then drywall new. Green drywall for the walls, regular drywall for the ceiling, using drywall screws.
    Once your new drywall is on, tape, mud, sand, clean, prime and paint or wallpaper.

  3. #3
    Join Date
    Aug 2007

    Default Re: What is this? Cardboard??

    Without pics, it's hard to say what you're dealing with, though I suspect it's just the paper layer on drywall that you're seeing. It is not uncommon for wallpaper to pull the top layer from drywall, especially unpainted/sized drywall.

    From the sounds of it, DJ is probably right, replacement will be better and easier than trying to repair what you've got.

    As for pictures, new members are restricted in posting pictures and links until they've got 10 posts. This is due to a spam problem that we've been plagued with. The way around it is to upload the images directly from your computer using the "manage attachments" button or to host the images somewhere else and link to them here. While the link may not be hot, the address will be there for us to use to be able to view them.
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

  4. #4
    Join Date
    Dec 2010
    Houston Texas

    Default Re: What is this? Cardboard??

    What they said plus,

    I'd go with all white drywall. No need to spend the money on the green stuff as you can get as good or better results with a quality paint job, which I am sure you were fixin to do anyway.

  5. #5
    Join Date
    May 2008
    Pacific Northwet

    Default Re: What is this? Cardboard??

    Two possibilities:

    If the cardboard is thin, just a little thicker than a cereal box, it's a heavy paper that was fastened over wall boards (not wallboard, but actual wooden boards) in the old days to act as a smooth substrate for wallpaper.

    If the cardboard is thick, like about 1/2", then it's a product called "Firtex" that was a precursor to sheetrock. It turned out to be a disastrous product for building walls, but it's still used for bulletin boards, cubicle partitions, and as an acoustic panel to absorb sound.
    The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.

  6. #6
    Join Date
    Nov 2007

    Default Re: What is this? Cardboard??

    back in the 50's or around that time bracket it was an alternative to drywall. You probally noticed on the one side it said something like all weather sheating. it looks like cardboard with out the expanded parts. it was about 1/2 of an inch thick. no it won't paint well and shouldn't be exposed to bathroom moisture. so like mr. spruce and the others are saying rip it out and replace it with something that is more appropriate for bathrooms.
    Last edited by havanagranite; 07-27-2011 at 10:02 AM. Reason: add info

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