Asked on Nov 28, 2016

How to clean or encapsulate mold on drywall without removing drywall

by Audra
Hi guys, just like the title says, I just want to know if it's possible to encapsulate or clean drywall that has no finish on it rather than removing it. For reasons that are too much to explain, removal is not an option for me. What is the beast way (without removal) to ensure no further growth will occur? I've heard of mold sealant for surfaces such as wood, does that product also work on drywall?
  4 answers
  • William William on Nov 28, 2016

    Mold encapsulation is used for materials that are contaminated but cannot be easily removed. Example is floor joists, roof rafters, etc. These materials are cleaned to remove as much mold as possible then are painted with the encapsulation product. They must be completely sealed or mold growth will come back. Drywall, paneling, insulation are easily removed and replaced. I would not attempt to seal drywall as mold growth usually starts from inside out. The surface mold is a sign there is a bigger mold problem behind the drywall.

  • Its6268865 Its6268865 on Nov 29, 2016

    Just a question at this point: Do you know the source of the moisture and is it from behind the wall?

  • Janis Janis on Nov 29, 2016

    Surface mold does not always start from behind the drywall...sometimes it is just 'surface' mold. Use two parts water and one part chlorox and wipe it clean. This will clean it and then paint with Kilz.

    If you do encapsulate it, it will eat through the drywall.

    This is only good for a small area. Large areas are best treated by removing the drywall and if the mold is dry, dampen it first before removing drywall. This will keep the mold on the drywall and not floating through the air. Good luck!

    • See 1 previous
    • RichandTammy Whiteside RichandTammy Whiteside on Nov 30, 2016

      Please kill the mold before you do this just to be safe. You can even put a mix of clorox and water into a spray bottle and mist just that area but you definitely want to get rid of it first.

  • Laura Williams-May Laura Williams-May on Dec 12, 2016

    fix the problem then seal with shellac. Shellac is clear and seals all stains. Or you can use kilz sealer. or zyzzic [sp] sealer primer but they are white.