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.
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
Originally Posted by Joehvac25
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!
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.
I agree. I have no problem replacing moldy ductwork, coils, etc. It's the cleaning and/or treating that I'm not comfortable with.
Originally Posted by nchvac
I have tried to simplify it to the point of "Know when to walk away and when to RUN".
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?
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
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.