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New construction mold?

user-7622774 | Posted in General Questions on

Building a new home and there seems to be mold on the framing? What steps should we take have this addressed by the builder??

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  1. etekberg | | #1

    None, unless your sensitive to it.

    I'd me more concerned with those ducts in unconditioned space that i think I see.

  2. user-7622774 | | #2

    Great point thanks so much...

  3. walta100 | | #3

    Nothing to do at this point. You do want to get a dehumidifier running once you have the windows and doors in.


  4. geir_gaseidnes | | #4

    Dehumidifier, electric heat (propane will dump more water in the space), fans, and scrub with diluted bleach. What is the moisture content of this lumber? Do you have a digital moisture meter? In an effort to drop the moisture in my new construction home once the sheathing was up, I measured a few dozen spots that were troublesome, measured the moisture % and wrote it down on the spot with permanent marker, tracking it over time. I had some spots as high as 25%, was aiming for 10-12%. It took a few weeks to get there. One spot that developed mold was treated with bleach water, and it seemed to do the trick.

  5. Expert Member
    BILL WICHERS | | #5

    If you’re really worried about it, buy one of the pump-up style portable sprayers made for spraying insecticide and fertilizer in gardens. These sprayers are often around $10 or so. Get one rated for use with bleach. Use the sprayer to spray bleach solution (diluted bleach) on the moldy areas before you close your walls.


  6. paula_builds | | #6

    I had mold on framing and plywood and addressed it by mixing up TSP, washing soda, and baking soda in hot water, letting it cool, and then spraying on. It creates a very basic (ph wise) environment which should prevent mold. Supposedly more effective than bleach.

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