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Babiez68 04-25-2012 07:44 PM

Black Mold????
Okay so I am redoing our bathroom. We are remodeling the home of my husband's late parents, built in 1968. Anyway, tore up the vinyl flooring and this is what I found. Help!!!!!! Do I need to try and pull up the sub flooring, remove the toilet, call Ghostbusters?? etc. . . any advice appreciated.

joecaption 04-25-2012 08:02 PM

Can you hold the floor closer to the screen so we can see it?
Or better yet post a picture.

chicagoremodeli 04-25-2012 08:05 PM

If you can post a picture that would be great. But other than probably the mold got there from leaking toilet over many years. Will be back once you post the pic.

Babiez68 04-25-2012 09:54 PM

Photo of black mold.....
Okay I guess I am just an do I post a pic???

Babiez68 04-25-2012 10:00 PM

1 Attachment(s)

shaunam 04-26-2012 11:53 AM

My mechanic found black mold in my car when he was doing some repairs and he said to use bleach. I did it and it looks better, but I'm not sure on flooring.

hammerlane 04-26-2012 12:23 PM


Originally Posted by shaunam (Post 908051)
My mechanic found black mold in my car when he was doing some repairs and he said to use bleach. I did it and it looks better, but I'm not sure on flooring.

Does Bleach Really Kill Mold?
Will chlorine bleach kill mold or not—yes or no? The answer is yes, but with a caveat. That answer comes from The Clorox Company, Oakland CA, manufacturer and distributor of Ultra Clorox® Regular Bleach. The company’s correspondence to Spore°Tech Mold Investigations, LLC stated that their Tech Center studies supported by independent laboratories show that “…3/4 cup of Clorox liquid bleach per gallon of water will be effective on hard, non-porous surfaces against… Aspergillus niger and Trichophyton mentagrophytes (Athlete’s Foot Fungus)”. Whether or not chlorine bleach kills other molds and fungi, the company did not say. The “hard, non-porous surfaces” part of the sentence is a caveat. Mold remediation involves the need to disinfect wood and wood-based building materials, all of which are porous materials. Thus, chlorine bleach should not be used in mold remediation as confirmed by OSHA’s and EPA's updated recommendations and suggested guidelines. The use of bleach as a mold disinfectant is best left to kitchen and bathroom countertops, tubs and shower glass, etc.

Why Chlorine Bleach is NOT Recommended for Mold Remediation.
Clorine bleach is corrosive and that fact is stated on the product label (not to mention the exposure hazards of dioxins). Yet the properties of chlorine bleach prevent it from “soaking into” wood-based building materials to get at the deeply embedded mycelia (roots) of mold. The object to killing mold is to kill its “roots”. Reputable mold remediation contractors use appropriate products that effectively disinfect properly scrubbed and cleaned salvageable mold infected wood products. Beware of any mold inspector, mold remediation contractor or other individual that recommends or uses chlorine bleach for mold clean up on wood-based building materials.
Laundry bleach is not an effective mold killing agent for wood-based building materials and NOT EFFECTIVE in the mold remediation process. OSHA is the first federal agency to announce a departure from the use of chlorine bleach in mold remediation. In time, other federal, state and other public safety agencies are expected to follow OSHA’s lead. The public should be aware, however, that a chlorine bleach solution IS an effective sanitizing product that kills mold on hard non porous surfaces and neutralizes indoor mold allergens that trigger allergies.

CAUTION: DO NOT MIX CHLORINE BLEACH WITH OTHER HOUSEHOLD CLEANING AGENTS. DOING SO CAN CAUSE SERIOUS HARM TO HUMAN HEALTH AND EVEN DEATH. For example, mixing chlorine bleach with cleaning products that contain ammonia or acid (vinegar, as one example) releases chlorine or chloramines, gases which are highly TOXIC.

taken in part from:

Babiez68 04-26-2012 01:21 PM

Thanks so much for the replies. After looking at it further I have finally decided I am going to pull the toilet and replace it, it's quite old, and before installing the new one I am going to pull up the old plywood and replace it. I would rather be safe than sorry....but what a great place this is. Thanks so much for the information.

fax6202 05-01-2012 08:16 AM

white vingegar will work as well. One other option is to contact a mold remediation company and ask to buy a few bottles fo the fungicide they use. I did this. I was pretty cheap and you get a good product, the same product they use.

shaunam 05-10-2012 09:35 AM

Didn't know white vinegar would work, awesome. Now I have another way if I need it. Thanks.

Trucon01 05-10-2012 10:02 AM

I also took the vinegar approach... after I used bleach...

I used 3 gallons of straight bleach (WELL ventilated), let dry for 24 hours. I then used 3 gallons of straight white vinegar and let dry for 24 hours. I am now waiting to use the Safe Muiratic Acid on the walls to not only give it a final cleaning but to etch the block and clear the efflorescence...

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