Questions tagged [moisture]

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30
votes
9answers
588k views

What humidity should I set my dehumidifier to?

I just bought a 50 pint dehumidifier for my basement. What humidity level should I aim for? This time of year the outside humidity is very high (over 80%) and we do not have central air. Right now ...
29
votes
9answers
218k views

I have a basement floor with lots of moisture, can I paint or seal it to make it waterproof?

My basement has a slight dampness issue, where if I leave things on the floor they will get wet. There are no leaks and no standing water, the moisture seems to be wicking up through the concrete. I ...
16
votes
4answers
4k views

Moisture leaking out of chip in floor tile

I dropped something heavy and mildly pointed onto the bathroom floor. The Bathroom is tiled with ~30cm square black "slate like" tiles, but where I dropped this thing, the surface has been badly (2-3 ...
13
votes
5answers
3k views

Will it cause problems to shower without the exhaust fan and only turn it on afterwards?

If the exhaust fan was not turned on until after the shower is complete (say, 30 min. after the water is first turned on), is that enough to cause mold/mildew/paint issues? The mirror is foggy during ...
12
votes
1answer
333 views

How to make a house that tolerates condensation

Where I live, it's humid outside all fall, winter, and spring, and hovers around 45 deg F. Combined with indoor cooking, showering, etc., we always get a lot condensation on our windows. Rot & ...
11
votes
2answers
2k views

What are our options for carpeting the basement of a split-level house?

The basement level of our house (1/2 below grade) is currently just vinyl tile on concrete slab. It's cold during the winter, so we would like to carpet it. We do not get water penetration through ...
9
votes
2answers
2k views

How can I remove a moisture mark from a wooden table?

I have a white mark on my wooden dining table that was caused by a potted plant sitting there for too long without a saucer. Attempts to clean it off have been futile because it seems not to be a ...
7
votes
3answers
6k 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
1k views

What are these vents in the foundation mortar for?

Throughout the interior side of my 1925 brick foundation are little metal vents embedded in the mortar at irregular intervals. Neither our home inspector nor our real estate agent knew exactly what ...
6
votes
2answers
1k views

How do I drywall over a partial cement wall?

I have 9' walls and the bottom foot or so is cement on one wall. What's the best method to drywall over this wall so no moisture seeps in? As you can see, there was moisture seeping in down at the ...
6
votes
3answers
4k 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.
6
votes
2answers
8k views

What type of subflooring should I use for a basement?

My basement has wall-to-wall carpet in the two bedrooms and living area. The carpet was probably from the 70's when the house was built and we decided to remove it. After removing the carpet from ...
5
votes
3answers
21k views

What can I do about mild water/moisture damage to laminate wooden flooring?

Yesterday, I accidentally left the window open while it was raining heavily. Some rain poured in for a while (maybe a half-hour or so) before I noticed. After I had wiped off the floor, some dark ...
5
votes
2answers
5k views

Is it OK to block off an unused root cellar to mitigate moisture problems?

I have a root/cold cellar underneath my front porch. The walls appear to be poured concrete as I can't see any bricks or cinder blocks. The room sweats like crazy so there is an obvious moisture ...
5
votes
2answers
3k views

Are there any electro-osmosis damp proofing systems that work? [closed]

I have a problem with rising damp in an old wall and am wondering if electro-osmosis damp proofing systems actually work to remedy this as they claim. The type of system I'm talking about consists of ...
5
votes
2answers
8k views

What are the brown stains showing through my white paint?

Should we be worried about these? We have some brown spots like these in the top floor, in the wall and some spots in the ceiling. Mostly around the ceiling nails like in the first picture. They are ...
5
votes
1answer
1k views

How do I mitigate moisture problems when putting up drywall over stucco with torn tar paper?

I'd like to finish my 56-year old garage with drywall but I have concerns about moisture. The wall construction looks like stucco over tar paper with metal wire support, then the frame. My main ...
5
votes
1answer
65 views

How can I determine if moisture in a basement is due to condenstation vs intrusion through walls?

I have a 1902 house built upon a limestone foundation, and I am interesting in finishing a portion of the basement to build a home office. Before I build anything though, I want to make sure I do it ...
4
votes
5answers
28k views

How to get rid of moisture in hardwood flooring?

We have recently come to a halt with our building due to our hardwood floorboards cupping and swelling in several places.(Boards were acclimatized for several months before installation) They were ...
4
votes
2answers
11k views

Will I trap moisture in the concrete of basement walls and floors if I seal them with epoxy?

I'm thinking about painting my basement's walls with some concrete sealer (before finishing the basement) and floor with epoxy paint. Many people are doing that, but I'm concerned about moisture in ...
4
votes
3answers
7k views

What actions can I take to reduce moisture on basement floor?

In one corner of my basement, after a few heavy rains, I see a darkening of the concrete floor. To touch, the concrete feels damp-ish. I say damp-ish, because when I pull my hand away, I don't see ...
4
votes
5answers
1k views

What are the options for moisture-proofing foundation from the interior

I'm trying to prevent moisture from turning into mold and growing on concrete exterior walls and getting into the fiberglass insulation. I see polystyrene, foil, chemical-based concrete sealing, and ...
4
votes
2answers
9k views

Soil grade is above foundation

Our soil/landscaping grade is between about 4" and 8" above the foundation. I've read and been told that this is a problem. I believe the soil should be ~4" below the foundation line. We have a ...
4
votes
5answers
52k views

How can I remove humidity from a room without a dehumidifier?

I've noticed a problem in my apartment that returns every winter - I get mold around the windows. This year the cold weather came earlier than usual and the mold appeared quickly in great amounts, so ...
4
votes
2answers
3k views

Vapor and moisture barrier for “above ground” basement

I'm finishing the basement of my home in New Jersey, and I'm a bit confused about the general guidance for basement moisture and vapor barriers. My "basement" is built from concrete block. However, ...
4
votes
3answers
6k views

How should I insulate a room built into a metal barn?

I'm building a room into our (existing) barn; how should I best go about insulating it? The barn is a Morton building -- pole barn construction, metal siding. It's closed on three sides but open on ...
4
votes
3answers
16k views

What is correct vapour barrier method for bathroom ceiling in a bungalow in Canada

I am in the middle of a complete main floor bathroom gutting and re-finish job in my house in CANADA.. and WINTER IS COMING!!!! THE BACKGROUND (pics below): My bathroom is 5'x 13' in a bungalow with ...
3
votes
3answers
992 views

What can I do to solve the moisture problem in my bathroom?

My bathroom walls are done in concrete not drywall. I installed a ceiling fan. After showering, the walls are covered with moisture. What can I do to eliminate the moisture?
3
votes
4answers
22k views

Install plastic between drywall ceilings and rafters?

We are building a new house and are getting ready to install the drywall on the ceilings. We have installed a 6 mil plastic barrier on the underside of the rafters to act as an air & moisture ...
3
votes
2answers
10k views

Vinyl tile installation over a concrete basement floor with moisture

I would like to put some sort of flooring over part of my basement. Something with the look and simple installation of an interlocking garage tile (example) would fit the bill -- this isn't a living ...
3
votes
2answers
2k views

Can I build a dry room in a moist garage?

I have a garage that lies in sloped terrain with the back wall almost fully below ground level. The garage is very moist, probably because of water seeping through the walls and floor. I would like ...
3
votes
2answers
5k views

Will this moisture problem persist after drywall is installed?

we remodeled a trailer home recently, removed the aluminum siding, put up osb in place of the siding, then used the Lowes brand of house wrap. we installed new vinyl siding over that without using any ...
3
votes
2answers
710 views

Remove plywood floor before insulating attic?

My 1940 house's upstairs ceiling is composed of: 1/2" of plaster 1/2" of solid paper backing 2x6" joists spaced 16" apart (2" rolled batt and 4" open-faced batt insulation) 1/2 inch plywood Open ...
3
votes
1answer
2k views

How to remove hydrostatic pressure from basement floor so we can finish part of the basement?

We purchased a 3000 square foot ranch that was built in 1977. We would like to finish about 1000 sf of the basement. It has poured concrete walls and a concrete floor. Currently, we have two sump ...
3
votes
2answers
463 views

Prevent dry rot from spreading

Last winter, I had serious dry and wet rot issues in the basement. The reason seemed to be that the wall was not watertight. This has been corrected and repair works were carried out by professionals (...
3
votes
2answers
1k views

What is the best way to tell a water stain on a drywall is wet

We had a leak in the roof a while ago that caused water stains on the wall. The leak should be fixed now, but we wanted to wait a bit before painting the wall until we are sure that there is no more ...
3
votes
1answer
2k views

Is some condensation on bathroom walls safe?

I have an exhaust fan in my master bathroom and also a wall heater. I like to run the heater without the fan running during my shower so that the room is nice and warm when towel drying off. I then ...
3
votes
1answer
919 views

Do shower water supply line covers need to be sealed or caulked?

I don't know what the proper name of the cover is that hides the hole that the water supply line comes through the wall, but does it need to be sealed to prevent moisture and steam from getting in to ...
3
votes
1answer
3k views

What should I do about paint flaking away from an area with moisture in the wall?

We have a very old cottage (built in 1650) that we have just completely refurbished from top to bottom. Because it is stone & brick and had a major problem with damp when we first purchased it, we ...
3
votes
1answer
2k views

How do I install electrical through “new work” stucco?

See also How do I install electrical through existing stucco (e.g. "old work") which deals with the old work situation. What are the best practice products and procedures for installing an ...
3
votes
2answers
144 views

Wall damage from insufficient attic ventilation

The wall in my master bedroom, which is facing outside, has exposed brick and, for several years now the bricks have been showing signs of moisture damage. The symptom is white, frost-like substance ...
3
votes
2answers
214 views

Should I install a moisture barrier before installing engineered hardwood in a partial basement?

I am thinking about using a 6 mil poly and a thicker sound/water barrier to make walking on the floors a bit softer. I plan to tape (or use silicon) as a means to seal moisture. My question is, is it ...
3
votes
3answers
18k views

Can furring strips be installed diretly to a cinderblock wall not in a basement?

I've tried finding a definitive answer but it's far more common for folks to have block walls in basements that need to be furred out, so the information deals primarily with that and I believe this ...
3
votes
2answers
21k views

Is it OK for air conditioning condensation to drip right next to the house?

Our house has a 3/4" PVC pipe coming out the side which drains condensation from the central air conditioning. It drips at what seems like a normal rate. Taking a wild guess, I'd say a gallon per day. ...
3
votes
2answers
11k views

How do I stop water from seeping between my porch roof and house siding?

I have a small roof over my side door on my porch. Whenever it rains or snows, some water always seeps in between the small roof and the vinyl siding. It drips down the siding and makes a puddle on ...
3
votes
1answer
2k views

How do you repair weep hole flashing in a brick veneer?

I have a 1950's home with a brick veneer and a crawlspace. The flashing that routes water from behind the veneer to the weep holes has broken in spots over time due to the weight of the trash mortar ...
3
votes
0answers
1k views

small black flying insect/bug in the house all of a sudden [closed]

it has been raining like crazy recently in my area (Maryland) for the last month and a half. I noticed that i'm seeing a lot of small flying insects (the kind that is seen on a extremely ripe banana) ...
2
votes
7answers
29k views

Can a portable air conditioner be used to reduce moisture in a room?

I live in a flat in an older house and I have the disadvantage of living next to an outer wall. In autums/springs there is a period when the central heating isn't turned on yet, but it's already ...
2
votes
6answers
290 views

How do I solve this mould problem?

Before I get down to details I just wannna say that we are in UK and unable to go anywhere else as of financial issues. We've been living and renting a bottom floor flat for 4 years and it's been ...
2
votes
1answer
870 views

Foundation Built on Ledge Rock

A corner of my houses foundation sits on ledge rock. There's some corrosion that lets moisture in where the foundation meets the rock. The foundation is field stone and was built 100 years ago. Why ...

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