Questions tagged [mold]

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

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1answer
135 views

How to paint a small bathroom with very poor ventilation?

Amateur here, just trying to do his best. How to paint a small bathroom with very poor ventilation? I imagine I'd want a paint that seals the paint behind it (which has been prone to a little mold), ...
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1answer
217 views

White mold or fungus on PT lumber

I'm building a wooden fence and have a number of 4x4 pressure treated lumber stacked neatly in my garage. I've been pulling posts from the stack as I work on the fence over the last 4 weeks. When I ...
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55 views

Condensation on HVAC, mold on joists/subfloor in basement

I have heavy condensation on the plenum and supply line near an exterior wall/window in my unfinished basement. I have mold and moisture on my subfloor and joists just in this 3 sections. I sealed up ...
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2answers
69 views

Does the mold on this bathroom panel look like it can be washed off?

I previously asked this question Is this mold or some other substance? Anybody know what material the bathrooom side panel is and does it look like the moldor whatever substances can simply be washed ...
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1answer
43 views

How should I contain mold contaminated items?

I previously asked this question Is this mold or some other substance? where I discovered some mold behind a bathroom panel. The sensible thing to do would be to just throw the mold contaminated ...
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3answers
77 views

Is this mold or some other substance?

My bath tub side panel was not sealed and it seems water has been splashing in causing some damage. I always thought mold would have to smell musky however the damage doesnt smell musky. I previously ...
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0answers
66 views

Rot or mold on the underside of deck

Anyone know what this stuff is? Had boards similar looking to these on our deck two months back, ripped the bad boards out, but the neighboring boards acquired the same ailment since then. Ripped ...
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2answers
38 views

How to properly re-caulk this shower?

The caulking in my shower was old and had some mold stains, so I removed it and am planning to re-caulk. After removing the old caulking, I noticed that parts of the removed silicon (the ones removed ...
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1answer
155 views

How to determine if damp smell, marks, cracks, mould, on internal walls is from; rising damp : condensation or other

I live on the ground floor of an art deco complex, with 2 apartments above me. We have lived here for almost 13 years and have never had a problem with damp / mould issues....other than our bathroom ...
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2answers
382 views

Bottom few inches of drywall got wet, but wall looks fine. Do I have to replace that drywall?

So my basement bathroom backed up, and some water (mild sewage too I guess) spilled to floor, and made its way under the wall. I have sprayed enough mold killer, and Clorox to kill an elephant, and ...
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3answers
111 views

Humidity levels in new basement are high

I'm currently living in a new build in Ottawa Ontario for which I took possession in February 2020 ( I've been here for about 5 months ). The humidity levels in my basement have gone gangbusters in ...
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2answers
110 views

Do these pictures suggest mold is growing behind walls?

Seeking advise on mold. This wall isn’t hard, feels kind of soft to knock. Do u know what material it is and can mold hi through it? You can see in the pics I peeled it and it just revealed more ...
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2answers
86 views

Mold in tub caulking

I have mold/mould in the caulk/grout of my tub. Before I go about re-caulking it, I want to try killing it. I've seen sources say to use vinegar or bleach but are these sources correct? I've also seen ...
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1answer
104 views

If mold is pushing cracking through paint, does it mean its inside the wall?

Image is not real but a rough idea of whats happening. As you can see the paint is cracking because mold is growing behind it and pushing out. If the mold was coming from the room I imagine it would ...
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2answers
88 views

Looking for feedback on prep & paint plan for moldy wood siding

I'm getting ready to paint my cabin this summer and I was hoping to get a reality check on the order of sequence. I've painted houses inside and out before but they were new, and this is a bit ...
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1answer
12 views

Can moisture travel through a microporous filler and fuel mould growth?

I would like to use this product to fill holes due to it bring good for sensitive people: https://auropaint.co.uk/product/natural-wall-filler-no-329/ However it says that it is micro poros which ...
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1answer
77 views

How should I clean mold from studs?

I found a water leak behind my refrigerator. It was about 3 feet wide a 1 foot high. I pulled the drywall and I'm running a blower and dehumidifier in the kitchen. The studs have some mold on them. ...
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1answer
38 views

Can mould be leaking through pipes cracks/holes?

I know that mold is definately leaking through some of the deep holes in my flat. You can see brick in the holes as well as space for air to travel. Can pipes with cracks and holes behind them also ...
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1answer
49 views

Do you need to do a damp test?

I have mold smells coming from the various hole in my flat. My landlord inspected the property and said we can't see it but are willing to cover all the cracks and holes for you. I said you can't see ...
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0answers
43 views

Why is the bathroom ventilator constantly running?

Recently due to an outdoor smell which is making me ill I've had to close all my windows in my small 1 bedroom flat. I now notice the bathroom ventilator is constantly running whereas before it used ...
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1answer
67 views

Metal roof over mold, lichens, moss

I want to install a metal roof over my single layer shingle one on my unheated garage. It has mold and MOSS and lichens. Can I put a metal roof over mold and moss and lichens?
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2answers
85 views

consumer-grade modified atmosphere storage?

I hope this is the best forum to ask this question on: Where we live, mould is basically inevitable on anything that we put into storage for more than a few weeks, esp. on sensitive things like shoes....
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32 views

How to diagnose damp coming up through cracks?

I'm suspecting that my flat may have a damp and mould problem coming up through cracks etc and into my airspace. I definitely know in one room there is damp underneath the floorboards though I ...
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48 views

Can this cabinet piece be repaired?

I had damp and mold develop behind kitchen cabinets. The mold penetrated all over a backboard and I got rid of it. Then there is this bottom surface. You can see it’s all gone black. The ...
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1answer
60 views

Does primer normally separate in to different colors, or is this mold growing in it?

I have two five gallon buckets of Sherwin Williams PVA Drywall Primer & Sealer which is about a year and a half old. One is a partial bucket and the other is sealed and has never been opened. I ...
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1answer
606 views

How worried should I be about mold/mildew in my water softener tank?

My wife and I moved into a home that had been rented for a while. Looks like lots of maintenance has been deferred to us, including the water softening system. We noticed some mold in the tank during ...
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0answers
27 views

Sealing/resurfacing exterior concrete retaining wall

I have a 3 ft concrete retaining wall that runs across our backyard. It collects a lot of black mildew with white spots. Is there a sealant or other surfacing material that I can use to help keep ...
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4answers
110 views

Store Refrigerator, Keeps Doors Open How Often

I plan to store refrigerator in my residence unplugged. I cleaned it well with all soap, 409 and disinfectant, and left doors open to dry out for few days. They recommend to keep Doors Open for long ...
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3answers
502 views

Why do unused Refrigerator Appliances Grow Mold, while unused Cabinets and electronics don't?

I have a refrigerator that I thoroughly cleaned out and washed with soap/baking soda, and let thoroughly dry. They always recommend to keep Doors Open for long term refrigerator storage. This prevents ...
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4answers
2k views

What should I do about mold in a new build?

I bought my first place in December, five months ago. It's a new 3 bedroom, 2 bathroom condominium in San Francisco CA, and they finished construction in October 2019. Over the last few days, other ...
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1answer
92 views

How do I remove black mold from area of laundry machine where water won’t reach?

I noticed some black mold in my laundry machine. Unfortunately, this area seems to be in between the glass part and the plastic and I can’t fit even a fingernail in to remove it (even water can’t ...
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1answer
203 views

Do I need to remove mould from plywood before treating?

I have a shed base on piers topped with plywood that was finished last Winter and covered up to help protect from the elements. However some water made it through (or general dampness of being ...
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2answers
55 views

Do I need to remove this enclosed shower and check for mold?

My wife and I just bought a house, and I noticed after using the shower, there were black specs all over the shower floor. There is a seam where the bottom part of the shower joins with the wall ...
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2answers
94 views

What is this grey fungus/insect, and is it damaging the woodwork?

Yesterday my parents discovered these 'things' attached to the varnished wooden fascia board outside the downstairs bathroom. They are attached to the outside of the house, in a sheltered spot. They ...
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1answer
43 views

it is a good idea to turn on heating at the end of every air conditioning cycle at home for keeping filters clean against molds?

The question is: it is a good idea to turn on heating at the end of every air conditioning cycle at home for keeping filters clean against mold? Or is there any other way keeping filters clean due to ...
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3answers
3k views

There is mold in my bucket of paint. Can I still use the paint?

This is a very expensive acrylic paint, the bucket was not properly closed, and left 1 year in the basement. Now there is mold inside the bucket ; The strong smell of acrylic has also disappeared. ...
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1answer
70 views

Can Wet and Forget be used in a basement?

Can Wet and Forget (or similar product) be used in an unfinished basement? This style of spray connects to a garden hose and mixes as it is sprayed on affected areas. I am wondering if the additional ...
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1answer
252 views

What can I use to form concrete countertops longer than 8 feet?

Building a concrete counter top 4x10 and cannot fine a sheet of melamine 10 feet long anywhere. Anyone know where I could get a piece? I’d rather not joint to eliminate a seam
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3answers
55 views

Will fiberglass insulation grow mold? (Florida)

Followup to this question one of the comments says that fiberglass can trap moisture and lead to mold/mildew. I did some research myself and found other sources saying the same. This worries me -- ...
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1answer
161 views

replacing pressure treated 1x4 boards on roof with non-pressure treated white pine - OK?

On an 85 year old house there are pressure treated 1x4s running horizontally across the rafters, and the plywood sheathing is laid on top of those 1x4s. I have to replace some of these 1x4s but there ...
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1answer
132 views

How do I clean mold from a leaky ICF foundation?

I have an ICF foundation on my home that water is penetrating. I don't have a sump, and I don't know what kind of drainage is installed. My main concern is my west wall, since it is in the finished ...
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2answers
236 views

Are dark stains that show up when wet embedded mold?

Recently I fixed a leak which was causing moisture related issues (obviously). Upon doing some clean up of the area before reinstalling drywall, i noticed some dark spots, likely mold, on the wood. I ...
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3answers
77 views

Solution to put down a window sill crack to prevent mold

I have a couple windows where there is a space below the window that goes into the wall (see bottom of picture). There was mold and condensation all around the area, so I'm guessing there's mold down ...
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2answers
195 views

Mold on cedar soffit - how to fix?

I stained this 2 years ago before installation - back and front. The boards were kiln dried and stained inside. The penetrating stain I used contains linseed oil and after I installed I read some ...
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1answer
128 views

Should we glue above and below our rubber underlayment for wooden floors?

We have received our delivery of 3/4 inch thick engineered wood planks. They are 8 inches wide, random lengths, and the white oak layer on top is about 3/16 thick. Subfloor is very good and solid ...
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2answers
59 views

Is it safe to throw moldy items away

I have a lot of things which were covered in fungus. I have to go to some recycling area to throw them out. I want to know if is it safe as I heard fungus can get in your breathe. What is the best ...
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1answer
145 views

Respirator or mask for brick (crystalline silica) and mold?

I'm looking for a simple safety solution for multiple small projects that keep coming up. But it's not clear what safety mask and filters to buy. For example, I read an article that states that I ...
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2answers
706 views

Process of removing mold from behind shower tile

Background Thanks to a shifting foundation, the tile in one of our showers cracked along a corner and water got in behind it. We know that at the least the wall behind the tile has fails as it caved ...
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1answer
256 views

Washer and toilet water backing up into shower. Can't change plumbing. What can I do?

Renting a tear down, landlord does next to nothing, house will be torn down. Water drainage from house is not working, also not going to be redone. So the problem is drainage for 3 showers 4 toilets ...
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2answers
104 views

Is this mold situation ok to ignore?

We just bought a home in the North-East and were told by the home inspector that we had some mold growth in the attic, but that he didn't think it was the "toxic" black kind so it wasn't urgent, but ...

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