Results 1 to 8 of 8
  1. #1
    Join Date
    Oct 2002
    Location
    Lexington, NC
    Posts
    5,193

    Dealing with MOLD

    I know mold comes up a lot on this site. I don't deal with it much, but when I do, sometimes I don't really know what I can do, am suposed to do and are legally capable of doing. I wonder at what point mold remediation comes into play. And as far as the sprays and foggers go, is mold considered pest contro, which usually requires a license to spray those types of products for others?
    Reason I ask is that I went to a job today that had mold on the liner of the supply trunk and some in the flex ducts. I know mold isn't supposed to grow on these surfaces, but usually what I see is a dirty surface that mold is growing on. So the mold grows on the dirt (and eats on it to I guess). On this job, instead of trying to spray it, I just told the guy to rip the old out and lets install all new on the supply side.

    Hopefully we can get some good conversation going on this.
    The main thing is to keep the main thing the main thing!

    If "the grass is greener on the other side", it likely has been fertilized with Bull$hit!

  2. #2
    Join Date
    May 2012
    Location
    Upper Michigan
    Posts
    3,589
    I personally wouldn't mess with it, leave it to the pros, If you get paid to clean it up and it grows back they will call you and want it done again, but free.


    Sent from my iPhone using Tapatalk

  3. #3
    Join Date
    Mar 2012
    Location
    New Hampshire
    Posts
    84
    Quote Originally Posted by Joehvac25 View Post
    I personally wouldn't mess with it, leave it to the pros, If you get paid to clean it up and it grows back they will call you and want it done again, but free.


    Sent from my iPhone using Tapatalk

    Mold can be deadly. Whenever I run into a mold issue, I tell/show the homeowner, option a UV light, and walk away. Anytime you disturb it, you get the honor of bringing it home on your work clothes. Like Joe said; once you touch it, you own it!

  4. #4
    Join Date
    Oct 2002
    Location
    Lexington, NC
    Posts
    5,193
    A job that I found mold in the supply duct was caused by a faulty Mister Humdifier. I showed the owner and he asked the options. I told him all I would do was to replace the entire supply side of the duct system (minus the floor registers and boots, where we found no signs of anything other than dirt). He also opted for 2 UV lights (1 each side of coil) and a new bypass Aprilaire Humidifier with Automatic Humidistat and outdoor temp thermistor.
    I don't know about clean up, but removal/replacement I would think to be safe for our trade.
    Could be wrong on that. I told the guy straight up that the mold can't grow without the moisture, but he wanted it gone.
    I have to wonder how the duct cleaning guys deal with mold, as I am sure they find a lot of it.
    The main thing is to keep the main thing the main thing!

    If "the grass is greener on the other side", it likely has been fertilized with Bull$hit!

  5. #5
    Join Date
    Mar 2012
    Location
    New Hampshire
    Posts
    84
    Quote Originally Posted by nchvac View Post
    I don't know about clean up, but removal/replacement I would think to be safe for our trade.
    I agree. I have no problem replacing moldy ductwork, coils, etc. It's the cleaning and/or treating that I'm not comfortable with.

  6. #6
    Join Date
    Jan 2005
    Location
    Emerald Coast
    Posts
    965
    .

    I have tried to simplify it to the point of "Know when to walk away and when to RUN".
    ..
    Do not attempt vast projects with
    half vast experience and ideas.
    ...

  7. #7
    Join Date
    Oct 2002
    Location
    Lexington, NC
    Posts
    5,193
    Let me ask this. As far as duct cleaning goes, is it safe to clean ducts with a negative air system when mold is present?
    The main thing is to keep the main thing the main thing!

    If "the grass is greener on the other side", it likely has been fertilized with Bull$hit!

  8. #8
    Join Date
    May 2004
    Location
    south louisiana
    Posts
    3,318
    I geneally replace ducts, plenums and anything moldy.
    this would be AFTER identifying moisture source &
    stopping moisutre issue.
    usually in my hot humid area it mold is caused by
    condensation & leaky start collars at plenum.

    yeah, you have to know when to walk away though.
    got called to a house that the floors were badly
    foam insulated. everywhere bare wood or less than
    1" of foam...black mold. no vapor barrier on ground
    minimal venting.
    put my hands on that..I take on the liability that belongs
    to the foam company that didn't do a good job of insulating.
    needless to say...I took a pass on that one.

    best of luck.
    The cure of the part should not be attempted without the cure of the whole. ~Plato

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event