Have to deal with a small spot of mold.

[thestrangebrew1]

Noticed in one of our showers that I don't use there's a small spot of what appears to be mold starting to form in the grout. I was just going to use some comet and a toothbrush to try and knock it out, but should I use something more powerful? Any recommendations on some other cleaner to try to make sure it doesn't come back? Obviously, I'll have to inspect the area to see how it formed to begin with as from what I understand it can be a real problem if not taken care of immediately.

 

[lxskllr]

Comet and a toothbrush sounds reasonable to me. Mold is fairly normal. Check for leaks, keep the room well aired after use, and perhaps clean it a bit more than you think is necessary. Dampness will cause mold to grow. In a little used shower, you could get mold before it's otherwise necessary to clean.

 

[thestrangebrew1]

Comet and a toothbrush sounds reasonable to me. Mold is fairly normal. Check for leaks, keep the room well aired after use, and perhaps clean it a bit more than you think is necessary. Dampness will cause mold to grow. In a little used shower, you could get mold before it's otherwise necessary to clean.

Sounds good. I'll try the comet first and see how that works out.

 

[gorobei]

start with the scrubbing. add a vinegar soak.

if the stuff is too deep into the holes hydrogen peroxide should deal with the still living stuff. diluted bleach if you are paranoid.

 

[IronWing]

Copious bleach and it is still there, more bleach and pee on it.

 

[Charmonium]

fungus tends to send out tendrils that go as deeply as possible under the surface. I think of grout as generally being pretty porous. Newer grouts may not be though.

I just checked and traditional grouts are very porous. If you ever re-grout, try an epoxy version

So start with a surface cleaning but I suspect that's not going to cut it. You never know though start simple and see how it goes.

If it's a recurring problem, I dig out that spot down to the backing board. Taking out the whole line might be wise, but see what other feedback you get. Then re-grout with something non-porous.

While you're at it, and if you're bored nigh unto death, you can always get a sealer for the rest of the grout and GO WILD!!!

 

[Red Squirrel]

Benefect might work, it's what the home restoration industry uses to clean mold, sewer backup etc. Should be able to buy it from a home restoration company.