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  1. #1
    Join Date
    Mar 2012
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    Default peeling and craxking garage walls

    Our garage walls (interior) are peeling and cracking heavily. What is the best way to prepare them for repainting? Is there a special paint or primer that should be used for such an interior/exterior surface?

  2. #2
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    Aug 2007
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    Default Re: peeling and craxking garage walls

    What is the humidity like in your garage? Alligatoring of the paint is typical in high humidity/wet locations. It is something common to bathrooms with insufficient ventilation. In garages it is usually caused by improperly vented or non-vented dryers.

    Is there any staining? If so, seal the area with several coats of BIN primer (Zinsser red label ). Float out the rough walls with drywall topping compound and lightly sand to smooth finish.

    With the repairs done, apply two coats of Bullseye 123 primer (Zinsser blue label ), and follow with two coats of your paint of choice.
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

  3. #3
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    Mar 2012
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    Default Re: peeling and craxking garage walls

    The problem is the result of having the dryer venting into the garage. We remedied that years ago. We are only now addressing the paint issue. Moisture is not an issue other than what may occur as a result of outside humidity.

  4. #4
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    Aug 2007
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    Default Re: peeling and craxking garage walls

    Then the guideline I gave you will be sufficient. Good luck with your project, let us know how it goes.
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

  5. #5
    Join Date
    Feb 2012
    Location
    Tacoma WA
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    87

    Default Re: peeling and craxking garage walls

    S.c.r.a.p.e the walls first, then apply Zinsser stop peel. After that follow Spruce's advice. Put out all pilot lights when using bin primer. Also use mask and or open windows and doors.

  6. #6
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    Aug 2007
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    7,084

    Default Re: peeling and craxking garage walls

    Quote Originally Posted by Tacoma John View Post
    Put out all pilot lights when using bin primer. Also use mask and or open windows and doors.
    Oops, yeah, that's kind of important information I forgot to add.
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

  7. #7
    Join Date
    Jun 2012
    Posts
    1

    Question Re: peeling and craxking garage walls

    I live in South Florida and started patching and sanding my garage, then painted, all the paint is just peeling off easily. Under this is the drywall and a dusty residue, what is this residue and how do I get rid of it? Would like to get rid of this powdery residue and get my garage completed. Help

  8. #8
    Join Date
    Aug 2007
    Location
    Portland, Oregon, formerly of Chicago
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    1,794

    Default Re: peeling and craxking garage walls

    Jenbeatty,

    It sounds like someone sanded the drywall and then simply rolled over all the dust. Drywall should be wiped down after sanding and then a dedicated drywall primer should be used to seal the drywall. Drywall primers have a higher moisture content to penetrate that porous paper and mudded surfaces, giving a good bond. I decent quality paint should then be used, preferably one with some sheen to it. Too often people just grab a cheap flat paint at the big box store and then put it on without a primer.

    Personally, I think the primer is far more important than the quality of the finish coat. You will never again be able to get adhesion to the bare drywall.

    What should you do now? Sc**** the loose paint the best you can. Wipe off the surface dust. Patch and sand the areas with drywall compound and spot prime the patches. I would then prime the entire garage with a general acrylic wall primer such as Zinser 123 (not drywall primer this time). Finish coat with a quality wall paint.

    Especially in humid Florida, I would get a premium paint with a good mildecide in it. The first thing that gets eliminated when a paint company is cutting costs, is the addition of a mildecide. This alone adds a couple bucks to the cost of a gallon of paint. That $10 bargain paint will NEVER have a mildecide in it. For that matter, how good is the paint when an empty gallon can costs almost $5!

  9. #9
    Join Date
    Feb 2012
    Location
    Tacoma WA
    Posts
    87

    Default Re: peeling and craxking garage walls

    I agree with Ordjen on this one, he is a pretty smart cookie. There maybe another possiblity though, water. Where is it peeling, just an outside wall, or just one inside wall next to a bathroom or kitchen? If it is located in just one area or wall then it is most likely water, if it is through out then it is most likely poor prep and or paint.

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