Preventing, identifying, or treating mold infestations in the home.

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24
votes
9answers
133k views

How can I paint over mold to prevent it from coming back again?

The source of the leak has been fixed, however the old mold keeps showing though the new paint.
15
votes
2answers
722 views

1lb of cure is worth 10 tons of mold: DIY repair of a poorly sealed window? lots of photos herein

Preface I live in China. Construction is largely handled by unskilled migrants, and one cannot just call up a specialist contractor to fix a major issue. Problem I've got a window that was not ...
14
votes
7answers
30k views

What are the black spots on my bathroom ceiling? Are they mold?

My bathroom above my tub is getting some black spots on it that seems to be growing. I assume it's mold. I am wondering how should I deal with this? What should I expect it to cost?
10
votes
3answers
261 views

Something in my home is making my family sick. How do I determine what it is?

My wife and I moved into a new rental house two months ago. Our small dog, my wife, and myself have all started experiencing symptoms such as headaches, runny nose, constant congestion, cold-like ...
10
votes
2answers
5k views

How to remove/clean black mold?

What is the best way to remove black mold from wood? Specifically, the mold on my back porch is black mold. Is the best option to use something like Kilz over it?
9
votes
1answer
1k views

Mold remediation in crawlspace

Just bought a 25 year old home that has improperly installed insulation in the crawlspace. The insulation is fiberglass rolls with a paper backing, and is installed with the paper facing down, toward ...
8
votes
3answers
1k views

Should a bathroom fan vent to a separate duct system?

Is it acceptable to route a bathroom exhaust fan to the return of a central air system? I'm afraid this will cause mold to grow in the air return ducts. There is currently a fan in our bathroom and ...
8
votes
3answers
6k views

Why did insulation and vapor barrier cause mold in my storage shed?

I recently installed insulation in my garden shed and covered it with a plastic vapor barrier. This was done in the summer when the weather was warm and sometime humid. Shortly after I'd finished ...
8
votes
2answers
4k views

Is this termite damage and if so how do I repair it?

I was moving a bolt storage rack in the basement, and when I took it off the wall, I noticed that the wall behind it was moldy. Then I noticed a ripple in the paint going all the way up, and when I ...
7
votes
8answers
17k views

How do I clean a very dirty refrigerator?

I just got a new house and inherited a very moldy and mildewy refrigerator. My first though it to get some cleaning spray with bleach and just go to town, but I'm worried the bleach might damage the ...
7
votes
4answers
3k views

How can I seal the grout on kitchen wall tiles to give lasting stain and mold protection?

I have 1.5mm of white grout between rectified white tiles on my kitchen walls as a splashback (or backsplash in North America*) behind the sink and cooktop and I'm concerned about stains from food and ...
7
votes
2answers
2k views

Solutions for a moist basement?

I live close to the water and there is a high water table around my house. Therefore a lot of water vapor passes through the basement walls. I would like to be able to store stuff in my basement and ...
7
votes
2answers
2k views

What is the recommended way to destroy mold?

Back in the day I've heard that bleach is a good way to kill mold. The other day a home inspector suggested that Dawn dish soap actually works much better than bleach. I've heard from another home ...
6
votes
2answers
832 views

How do I treat mold and mildew in shower grout?

I have a tiled shower in an older house, and it's been a struggle to keep the grout clear of mold and mildew. I'm planning on installing a bathroom vent to prevent future buildup, but in the ...
6
votes
1answer
984 views

What to do if my sump is bone-dry?

My wife has been suffering the past two years with severe asthma symptoms (never had asthma before this). She's been advised that it's probably mold. We asked a company to look for moisture ...
6
votes
1answer
510 views

How to self-remediate mold?

We had some water damage recently (leaky toilet supply line) that flooded an upstairs bedroom and the room immediately below it. We had all the drywall torn out in anticipation of rebuilding and had ...
6
votes
1answer
634 views

Detecting mold with a blacklight

I've heard anecdotally that mold will glow green under a black light (UV light). Is this true? There's a room in my house with a musty odor, and I'm trying to determine the source of the smell. ...
5
votes
6answers
2k views

Should I spray down the shower with a diluted bleach solution after using it?

I have a tile shower in the basement that is not very well ventilated. My mother-in-law suggested a spray bottle of 1/2 bleach, 1/2 water, and spraying it around the surfaces of the shower after ...
5
votes
3answers
4k views

How do I get rid of mold from the bottom of a bath mat (where the suction cups are)?

We have a bathmat that we use to line the tub when we bathe our daughter. After the bath, we remove the mat and suction it to the shower wall (which is some sort of frosted glass) I've noticed black ...
5
votes
2answers
1k views

How to best keep floor vent by shower dry/mold free?

We just moved into a rental home. It turned out after living there for a few weeks that we discovered the vents were innudated with mold. They were so bad the landlord had to replace all the vents in ...
5
votes
3answers
800 views

What type of primer should be used on moisture resistant drywall?

What type of primer should I use my basement bathroom walls? New moisture resistant drywall has been installed, taped and sanded, and is now ready to be primed.
5
votes
1answer
1k views

Mold on drywall. Should I clean-up or replace?

Apartment next door got flooded and some water sipped underneath the wall. The floor buckled and had to be replaced. After removing floor trim I discovered some mold under the baseboard. I cut out a ...
5
votes
2answers
575 views

Can you have different types of vents on a single roof?

The attic of my house has serious ventilation issue and the sheathing becomes rotten. The roofing contractor suggests me to replace the rotten sheathing and install some ridge vent. His plan will ...
4
votes
3answers
156 views

What should I do to prevent mold from flooding?

Thanks to old plumbing, my upstairs toilet has flooded the bathroom -- and it's dripped all the way down to the downstairs bedroom, where it's soaked into the carpet there as well. I've got buckets ...
4
votes
3answers
216 views

Where do I begin finding estimates for problems with my potential first home?

I'm looking at purchasing an older home as a primary dwelling. On going through the house with an experienced Realtor and several experienced DIY people for reference (but not a home inspector or ...
4
votes
2answers
2k views

Is there a cheap way to test for mold spores?

We had toxic mold during the wintertime, which has been removed, by replacing the affected Sheetrock. However, my wife has often still the same symptoms she had at the time. Getting a contractor with ...
4
votes
1answer
210 views

Is spraying peroxide on studs with mold enough?

After removing some drywall in a basement that had mold on the bottom 1-2 inches, I was left with the base stud still black. Per the recommendation of a local company, I sprayed everything with ...
4
votes
1answer
2k views

Mold in grout or just stained by mold…is retiling needed?

At my parent's place there's a small bathroom with a shower but the bathroom doesn't have windows (there is a ventilation fan). I've noticed that in the grout, and some of the caulking around the ...
4
votes
1answer
1k views

How do I remove musty smell in coat closet?

Recently moved into an older house (1950s built) and noticed that the coat closet has a musty smell. The coat closet is next to the front door and has one wall that is an exterior wall. It has ...
4
votes
2answers
344 views

How do I know which mold agent is best?

I've had several mold remediation specialists come to my home each touting their preferred EPA approved mold killing agent including: Cal-brite, Fiberlock Shockwave, Microban BotaniClean. I've looked ...
4
votes
2answers
870 views

Is the lack of a vapor barrier in the attic causing my mold issue?

For the last couple of days we have noticed more and more mold growth on the ceiling throughout the house. Wondering what was going on, I climbed into the attic this past weekend and notice that no ...
4
votes
1answer
120 views

What areas of 1st floor sheetrock sould be replaced subsequnet to a major 2nd floor water leak?

In our apartment, the ceiling began leaking in 2 places. One of the places, the water was brownish and had multiple droplets, the other the water was clear. We called maintenance at 8 am and no one ...
3
votes
3answers
609 views

What are some methods to get rid of and prevent pink mold in the bathroom?

I have some pink mold on the seam where the bathtub connects to my wall tiles. There's also some on the grout on some of my tiles. I've tried to clean them with ajax. It doesn't get it all off. I've ...
3
votes
2answers
2k views

Is there a way to design/create a shower that is less prone to mold?

I think I've had it with traditional tiled showers...I can't stand the site of mold in between tiles, on the tiles! on shower curtains, on shower doors, etc. I think I'm pretty clean, but I always ...
3
votes
1answer
799 views

Is it a good idea to have an Infrared scan and/or air quality test done during a home inspection?

I'm looking to purchase a home that is only 10 years old, but has a finished basement. There's various home inspection "packages" that are offered with the companies I've looked into. The mid-line ...
3
votes
2answers
215 views

How can I prevent my dehumidifier drain line from freezing?

Is there a 120 Volt switch that would shut down power to a dehumidifier when the outside temperature goes down to 35°F to protect the drain line from freezing. A digital thermometer would need to ...
3
votes
1answer
79 views

Is this mold on my AC vent?

I went to close the AC vent in the apartment we're renting and saw this. Is this mold or just many years of dust buildup? If it is mold, can I safely just remove the vent and wash it?
3
votes
4answers
772 views

Inside of Washing Machine smells horrible. How to fix?

I bought a used Washing Machine (Miele W828) that looked to be in perfect condition. It actually works perfectly. However, the inside of the Machine smells horrible, like mildew. This smell gets ...
3
votes
2answers
4k views

What should I do after mistakenly using moldy paint on drywall?

I was painting my basement and used a six year old five gallon bucket of paint. It had about 4 gallons of paint in it. The surface was black, but it didn't smell bad. I thought it was the dye ...
3
votes
2answers
1k views

What should I do about this possible mold I found under paint?

I live in Austin, Texas, which is important in that we don't receive much rain, and it's not very humid. I was peeling paint off of the old drywall, and found what appears to be mold on the bottom of ...
3
votes
1answer
1k views

Was my mold issue handled properly?

I hope we didn't screw this up. We're in a rental and there was mold (blackish/grayish spots but it didn't look fuzzy) on the bare sheetrock garage walls and near a dryer vented into the garage (fixed ...
3
votes
2answers
78 views

Why is my new house making me sick?

I just moved into a new house and my son and I have been experiencing tightness in the chest and asthma. When we leave the house and are out and about; the symptoms are gone. Our bathrooms have no ...
3
votes
1answer
113 views

Can I fix a mold problem in wall-to-wall carpet myself?

Recently, an apartment-mate of mine flooded my toilet quite severely. It completely covered the bathroom floor (tiles) and seeped into the carpet. I'd say a good 6-8 feet of carpet was soaked in ...
3
votes
1answer
5k views

What should be done about water under bathroom floor tiles?

There is water getting under our bathroom floor tiles. The landlord believes that due to a recent remodel of whole bathroom, water is not draining from the window ledge but is instead going into the ...
3
votes
1answer
1k views

How can I locate and deal with mold between floors?

About 9 months ago, my wife and I replaced a toilet that had a broken wax ring. We got some water leaking down to the ceiling on the first floor. Now I'm having what seem to be mold symptoms -- I ...
3
votes
2answers
589 views

Is there a way to prevent mildew/mold from forming on vinyl siding?

The back side of my garage is shadowed by branches from neighbors trees, which causes mold/mildew to grow on the vinyl siding. Since removing the trees/branches is out of the question, is there some ...
3
votes
2answers
1k views

Is there a way to remove the mildew smell from under tile without damaging the tile?

We live in a rental. The toilet was leaking when we arrived. Landlord paid for a plumber to do a simple repair, but before that, there was definitely water pooling underneath the tile (and seeping ...
2
votes
3answers
175 views

What is the difference between mold in air duct and mold that grows in crawl space?

Specifically, are they both dangerous to human health?
2
votes
3answers
606 views

How to address mold/moss on newer roof?

I have an old house with a new(er) installed roof shingle that's about 5 years old. In removing leaves from the gutter today, I noticed green moss? mold? around some of the areas close to the house. A ...
2
votes
4answers
5k views

How to permanently remedy a patch of mold on a ceiling from a water leak above?

I recently discovered that water was dripping from the ceiling light fixture in a first floor bathroom. It turned it was due to a toilet leak (faulty wax ring) in a bathroom directly above. The ...