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mold clean up - is it topical? what solution to clean?

3 years ago

Have what appears to be mold in an unvented full bath. Attached are pictures. Is this topical or do you believe we need to cut out the drywall? If just topical do you think borax vinegar and hydrogen peroxide is enough to kill it? Additionally what type of paint should be used in here for the future until vented?

Featured Answer

PRO

Flo Mangan

3 years ago

I hate to tell you, but you have some pretty significant water leak problem. Until you solve that, you can’t mask it. If you have bathroom above this area, leak likely being generated from there. Water seeks it’s own level so it will travel the least resistant path. Contact company with modern leak/water detection equipment. This equipment sees through walls and identifies where there is water and they can usually remediate as well or refer you to people with expertise. Best of luck.

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Comments (9)

krissie55
3 years ago
Spray the area with bleach/water or other and see if it takes care of it before replacing the sheetrock. If the cleaner looks like it worked, wait a little while and see if it returns. If it returns, then remove sheetrock. It could be mold/mildew on the surface or it could have penetrated deep into the sheetrock.
Lala
3 years ago
last modified: 3 years ago
You could also try a small dehumidifier.

https://learn.allergyandair.com/bathroom-mold/

https://www.amazon.com/customerpicks/Explore-room-dehumidifiers-for-bathrooms/aaac062b53991f6f0a76?ref_=ws_cp_a4c140d12e5e593c9210_cp_3_t
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mainenell
3 years ago
Concrobium is the preferred product.
Casey Blades
Original Author
3 years ago
Hi Flo, this is on the second floor and no bathroom above, just attic. And these leaks are on an exterior wall. Do you think that it could be exterior water coming in?
PRO
Flo Mangan
3 years ago
Is there a "stack" or roof penetration? There might be water coming in around that. Maybe a vent for a hot water heater?? Even Tankless water heater need vents. How is condition of roofing? You have to identify the source of the water and fix that, then you can do topical removal (with proper protection, etc.). I have used Tea Tree oil successfully to remove and prevent. BUT, it has strong odor (non-toxic, just darn strong!). There are other treatments, but you don't want the spores being spread around or as little as possible.
lindac92
3 years ago
Do you have an exhaust fan in there? if not get one and run it every time the shower runs.
Looks like mold....but I'll bet a coat of Killz will fix it so you can [paint over.
mainenell
3 years ago
Are you in an area of the country that has cold winters? This would explain the problem being worse on the outside wall when there is no vent to exhaust the moisture created from taking showers. More moisture condensing on the cold wall in the winter. It could also be a leak on the outside wall. Are you having a problem with ice dams above the wall here?
mainenell
3 years ago
If you have problems in the bedroom then you need to find out why you have moisture problems there. A leak into the wall, too much moisture in the house (are you running a humidifier in your bedroom? Perhaps you need to set it lower or run it less. Mold always has something to do with excess moisture.

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