Questions tagged [mold]

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

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8 views

Installing HVAC return in mold-infested room

We're in the process of reducting our house for a central HVAC system. We have an insulated "cold room" in the basement that had an outbreak of green mold in the past, probably from an old fridge but ...
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1answer
36 views

Is this mold or is it something else?

I recently moved from Southern California to the Pacific Northwest, just outside of Seattle. I rented a house and have been living in it for ~3 months. Just earlier today, in the seldom-entered guest ...
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1answer
78 views

Can I remove this mold by myself?

I am living in a single room-appartment that has one window, a kitchen unit with no steam outlet/exhaust hood, and a bathroom with no windows but an (albeit small) ventilated outlet above the shower. ...
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1answer
26 views

Mold at Air Return

I have 2 HVAC units, one for upstairs and one for downstairs. When I went to change my air filter for the downstairs unit I noticed some mold in the return duct. This is a large duct that travels ...
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1answer
73 views

Mould removal - how bad does it need to be before cleaning isn't enough?

The kitchen faucet in my apartment has been leaking above the counter for years, but every time I complained to management about it nothing happened and it wasn't enough of an annoyance to make me ...
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1answer
59 views

are those mold? and are these dangerous?

Me and my wife are having headaches and fatigue lately, and we are not sure what's causing it. We did some research and found https://www.whatsupfagans.com/black-mold-in-showers/ and realize it could ...
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2answers
91 views

What are the black spots on my basement ceiling?

My house is one year new construction. I didn't use the dehumidifier at the basement until one month ago I realized the basement was damp and there were some mold on the wood frame on the basement ...
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1answer
29 views

mold into dishwasher

I come home from a week away to find that I left a few dishes in the sink, oops, and one of them has signs of life. Would it be unwise to put the moldy mug in the dishwasher? Should I first soak it ...
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1answer
51 views

Spider-like / roots? mold?

We recently discovered our dishwasher was leaking under our flooring into the subfloor (formerly the floor - oak before the previous owner added pergo). We’re in the process of cleaning it up and see ...
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1answer
44 views

Unknown growth on window

I found this growth on several of my back windows. I'm not sure if it is mold or moss or something else entirely. Hoping someone could help me identify it and how to safely remove it. Thanks.
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1answer
32 views

Mold concern after pipe leaked in ceiling

I bought a foreclosure that had been vacant and winterized for more than a year. About ten hours after I turned the water back on, water started dripping from the ceiling in the kitchen. When I ...
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18 views

how to clean mold off drydocked cinderblock

Drydocked cinderblock has a significant amount of black and purple mold on it. Will the etchant be sufficient if I want to put a second coat of drylock on? Bleach it first? Pictures Is channel in ...
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1answer
103 views

Bathroom flooded by condo upstairs. Can there be mold on the drywall between the floors?

Upstairs condo neighbor had an ongoing leak for about two weeks in their bathroom. Not sure what was leaking, but they replaced toilet ring and shower faucets and since then the leak has stopped. This ...
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61 views

Fujitsu Halcyon: Custom Air-Filter (C.F.M.)

I'm trying to make airfilters to fit over my Fujitsu Halcyon Wall Mounted heating & air-conditioning split system. I'm talking about the indoor unit specifically. The wire mesh screens that come ...
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1answer
44 views

How to avoid mouldy properties?

I've been wondering if there is any way to recognise materials/home designs which may mean the growth of mould in a house? For normal properties, simply opening the window during a shower prevents ...
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1answer
23 views

How to address minor mold problem in paint prep

A little bit of localized roof leaking occurred over the winter above the bathroom. We have addressed the roof problem, so no leaking is occurring any more, but now I'm getting ready to paint the ...
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4answers
57 views

How can I prevent a humidifier from getting moldy?

I have a small cool mist humidifier. It has a water tank and ejects a mist and does not have a filter or anything. It is "TaoTronics" brand in case anyone wants to find it. I've noticed pink streaks ...
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30 views

Is it necessary to replace carpet after a mold infestation in the ceiling and walls?

My ceiling and walls have had some mold issues. There was mold in the drywall which got wet due to condensation and a small roof leak. The affected drywall is replaced, but my wife is hyper-allergic ...
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62 views

Mold or something else?

What is this, is the mold anyone know? Photos: 1 2 3 4 5 6
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43 views

How can I prevent mold from growing on my bathroom walls?

The humidity in my bathroom is causing mold to grow on the walls. In addition there was a leak in the roof, that stained the ceiling, and now the ceiling is discolored as well even though the leak ...
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2answers
90 views

Is this mold on my bathroom ceiling?

I've recently purchased a house and am worried there might be mold on the bathroom ceiling. Can anyone identify if that's what these dark blotches are? If it is mold, what's the best way to get rid of ...
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1answer
70 views

What can be done with walls that are wet and moldy?

After several stormy and rainy days; wetness and mold began to appear on the walls. The mold quickly spread to all of the rooms in the apartment. It did not happen in the summer so it is probably ...
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1answer
70 views

Is this mold or not?

Mold or dirt? Leak for 6 months saturating this area.
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34 views

Damp/Wet Corners with Mold in House

In the outer corners along the external walls of our house, and inside closets on external walls we are experiencing water and moisture gathering on the flooring and there is mold appearing on the ...
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1answer
70 views

Moved into an older home and found plastic sheeting was applied to cinder blocks in basement

How do we know if we should be redoing all the drywall (on exterior walls) in the basement or leave as-is? We just moved into an older house (1970s) that was mostly sitting empty for about 6-12 ...
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6answers
5k views

Does A/C encourage mold growth

I think i'm being sold bunk by a mold company, but not sure. We live in the tropics, we recently had our bathroom ceiling flood due to a burst pipe, and went away immediately after. (the landlord had ...
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0answers
74 views

Basement room + concrete foundation + drywall + moisture question

Basement + concrete foundation + drywall / moisture question: just got drywall glued to a small portion of concrete foundation in an unfinished basement room: Should I have contractor remove these ...
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2answers
40 views

Risk of insulation triggering mold growth?

The unfinished basement gets water which is pumped out with a sump pump. (Water from heavy rains percolates into the basement.) Company A gave me an estimate to insulate the attic. So did Company B, ...
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2answers
465 views

What size uncaulked gap should be left at the bottom of a shower tile job, to allow draining?

The contractor's intent was to leave a gap at the bottom of this tile job, to allow drainage, and as an alternative to a caulk job requiring periodic maintenance: However it did not work, the gap is ...
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2answers
80 views

How can I remove mold from the underside of garage roof sheathing?

Home inspector found mold in roof under sheathing in my garage. Mold professional says they spray a fungicide to kill it and then spray with a tinted paint. Extremely pricey! You cant clean it off ...
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1answer
76 views

How do I assess what to replace during repairs after a severe roof leak? [closed]

Evening! Long story short. Bad roof leak. Leaked from the roof to the exterior wall. I do not know the extent of the damage (yet) but obviously I am not too worried since I plan on, once the roof is ...
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3answers
87 views

“nuclear option” for mold growth on ceramics and other tiles?

I have to clean a long-neglected area that has mold growing on tiled walls and floor. Soap and a good brush is called for, but I'd like to "fortify my assault" with household chemicals. Is there any ...
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1answer
210 views

Help with moldy deck from bad boiled linseed oil job

I need some opinions on what to do about my deck. About about a month and a half ago we applied linseed oil to our deck. Our first mistake was that the deck had a sealant, so the oil didn't really ...
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1answer
112 views

Is this mold in my apartment?

I recently found a slow water leak in the back of my closet which houses both the AC unit and the hot water heater. Maintenance came and pulled up the carpet and sprayed water/bleach on the affected ...
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1answer
41 views

mitigate mold concerns from humidity in sauna in PNW

I'm building a sauna into a house in the Pacific Northwest. One wall is external, three walls are internal, and there is an attic overtop where I can vent to the outside. All walls and ceiling of ...
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1answer
192 views

Crawlspace Insulation Upside Down Replacement

I have an upcoming project and would appreciate any input. My crawlspace in Maryland had insulation installed upside down (face paper towards ground) and is now rotted/mildewed/falling from the ...
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2answers
61 views

draining sauna into crawlspace

I'm thinking of setting up a drain from my sauna through the floor of my house into my crawlspace. Practically speaking, would this damage the house?
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1answer
63 views

We found this is it mold?

We had a water leak about two months ago and since then I have been sick. We have a mold specialist coming out but they couldn’t come for two weeks. We peeled the carpet back to find this...
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1answer
130 views

Getting rid of mold in areas you cannot reach

I used a home mold test kit (leftover from my previous question) to see if I had mold in my basement (where I sleep). Turns out a little bit of mold is growing in the petri dish. The mold looks to be ...
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1answer
150 views

Which comes 1st, the mold remediation or the re-application of drylock on old stone walls?

Basement: old stone walls, drylock painted 15 yrs ago. Now some stained, moisture damage, air mold test indicates pro.mold remediation needed. Moisture issue has been fixed, now the walls need to ...
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0answers
313 views

Black water from kitchen sink cold water line

Today I noticed my kitchen sink was leaking underneath in the cabinet. I went to take a look and it looked as if it was coming from somewhere inside the faucet. I disconnected the lines and removed ...
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1answer
30 views

Testing for MSRA/Staph in your home [closed]

I am unsure if this is the proper place to ask this, or if the Biology StackExchange would be better, but I thought to start here first! My situation is that I have been suffering from skin problems ...
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0answers
76 views

Furnace with no filter is drawing air from the basement which has black mould. I am looking at renting this house?

The house I am looking at renting is old but nice. Problem furnace in the basement has had the outside air intake closed so only draws air from the basement. The filter has been taken away and parts ...
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1answer
138 views

Is this mold? How to remove?

I'm in the process of renovating my garage. There was a 1 in. gap due to rotting wood where the roof shingles meet the fascia (part where gutter is attached). The discolored wood is near the gap. A ...
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0answers
158 views

How to remove surface mold on shower walls and ceilings?

I'll be doing a small bathroom remodel on a VERY old house which mainly includes installing bathroom fan and a full paint job as the main tasks. On first walk through, I noticed that the house has ...
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1answer
56 views

removing mold on wall beneath sink

I had some water dripping under the sink from the valve and the faucet that was leaking. After fixing the faucet, some mold started to appear on the dry wall behind the sink. I have taken it out two ...
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1answer
92 views

Help with hiring pressure washing service

I need to get my 2400 sq.ft., 2-story house pressure washed, and had a few services visit the house to provide quotes. The quotes are widely different so I need some advice to decide. Service A said ...
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1answer
72 views

How to construct a time capsule bottle? [closed]

We (my daughter and I) are building some time capsules in a bottle, i.e., putting photos, letters, small memories and so inside some glass bottles. We plan to have a good lifespan of some: 10 years, ...
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5answers
4k views

What is this black sooty material on the inside of my roller shutter?

I have a bedroom window that looks out over the east (a backyard with mostly tiles and little plants) with a roller shutter which over the past couple of years has gotten a serious buildup of some ...
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0answers
151 views

Why is there mold on the ceiling of my second floor balcony?

I have owned a new build house since August of last year. There is a balcony on the second floor and the ceiling of it is below my third floor. The side of the house has HardyPlank siding. Since last ...