What RH do you keep your basement?

arcenite

Lifer
Dec 9, 2001
10,660
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81
I've been toying with my dehumidifier... curious for those who also have the unfortunate need for a dehumidifier, how do you use it?
 

Imp

Lifer
Feb 8, 2000
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One's we've had only turn on and off, then permanently off when the bucket's full.

RH is funny because it depends on your temperature. Colder it gets, higher the RH goes given the same water content. So first thing is whether you actively heat your basement and keep it insulated or not.
 

xanis

Lifer
Sep 11, 2005
17,571
8
0
In the basement, set to auto dry. It's been running a lot from the cool weather and rain today.

EDIT: I wish there was a way to tie it into the house's plumbing or drain it outside so I don't have to keep emptying the bucket.
 
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arcenite

Lifer
Dec 9, 2001
10,660
7
81
One's we've had only turn on and off, then permanently off when the bucket's full.

RH is funny because it depends on your temperature. Colder it gets, higher the RH goes given the same water content. So first thing is whether you actively heat your basement and keep it insulated or not.

It's pseudo-finished with wood paneling and carpet. Not heated, not insulated (except the ceiling for some reason -- just bought the house a few months ago).
 

sdifox

No Lifer
Sep 30, 2005
101,209
18,222
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In the basement, set to auto dry. It's been running a lot from the cool weather and rain today.

EDIT: I wish there was a way to tie it into the house's plumbing or drain it outside so I don't have to keep emptying the bucket.

your dehumidifier does not have a hose connection? mine does :p
 

arcenite

Lifer
Dec 9, 2001
10,660
7
81
In the basement, set to auto dry. It's been running a lot from the cool weather and rain today.

EDIT: I wish there was a way to tie it into the house's plumbing or drain it outside so I don't have to keep emptying the bucket.

There are dehumidifiers that let you do this. You could always duct tape the bucket sensor and connect a hose to the drip :cool:

Edit: I've got mine going to the sump pump... I've heard people connecting to washer drain pipe as well.
 

sdifox

No Lifer
Sep 30, 2005
101,209
18,222
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There are dehumidifiers that let you do this. You could always duct tape the bucket sensor and connect a hose to the drip :cool:

Edit: I've got mine going to the sump pump... I've heard people connecting to washer drain pipe as well.

I just take my bucket out. using the hose connection and the other end goes to mechanical room floor drain.
 

Imp

Lifer
Feb 8, 2000
18,828
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It's pseudo-finished with wood paneling and carpet. Not heated, not insulated (except the ceiling for some reason -- just bought the house a few months ago).

Hmm... New Jersey? Assuming it gets freaking cold there.

What's your goal? Why do you need a dehumidifer? For the carpets, trying to keep mould to a low level, wood?
 

arcenite

Lifer
Dec 9, 2001
10,660
7
81
Hmm... New Jersey? Assuming it gets freaking cold there.

What's your goal? Why do you need a dehumidifer? For the carpets, trying to keep mould to a low level, wood?

It does get cold here... but not like it does in Canada :eek:

Goal is to minimize mold and the musty smells.
 

sdifox

No Lifer
Sep 30, 2005
101,209
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What did you use to waterproof the wall?

find leak from inside the basement

dig trench beside basement wall with leak

wash basement wall (outside wall, Einstein)

roll on tar

put on thick plastic backed sheet of tar

put dirt back
 

iGas

Diamond Member
Feb 7, 2009
6,240
1
0
In the basement, set to auto dry. It's been running a lot from the cool weather and rain today.

EDIT: I wish there was a way to tie it into the house's plumbing or drain it outside so I don't have to keep emptying the bucket.
Put the dehumidifier on a shelf/ledge or hang it and drill a hole for the water to drip into a condensate pump (less than $50), or run a small pipe (must have ptrap, or loop to prevent sewer gas) from it to the drain pipe.

The simplest way is to put the humidifier by the floor drain or near it, and run a pipe from the bottom of the dehumidifier to the floor drain.
 
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Imp

Lifer
Feb 8, 2000
18,828
184
106
real solution is to dug up side of the house, waterproof basement wall from outside.

Not giving a professional recommendation (I did a chunk of my masters on building science = insulation and moisture), but watch out when you do that.

Remember that warm(er), moist air inside touching cool surface causes condensation if cool enough. Waterproof the outside, and the water can't get in, but the water also can't get out - this depends on if you drywalled and framed your basement though and WHERE in the wall it condenses. If you didn't insulate, then nothing to cause mould and it can dry. Mould eats the sugars in paper/tree products, IIRC, so none of that shit = mostly okay.

Long story short, it's one big clusterf*ck when and no one's completely sure on how to properly insulate and moisture-proof a basement. Best practice is to vent the walls so if it condenses, it can dry. But, again a big but, there are so many different things to account for that there's no set rule.
 

sdifox

No Lifer
Sep 30, 2005
101,209
18,222
126
Not giving a professional recommendation (I did a chunk of my masters on building science = insulation and moisture), but watch out when you do that.

Remember that warm(er), moist air inside touching cool surface causes condensation if cool enough. Waterproof the outside, and the water can't get in, but the water also can't get out - this depends on if you drywalled and framed your basement though and WHERE in the wall it condenses. If you didn't insulate, then nothing to cause mould and it can dry. Mould eats the sugars in paper/tree products, IIRC, so none of that shit = mostly okay.

Long story short, it's one big clusterf*ck when and no one's completely sure on how to properly insulate and moisture-proof a basement. Best practice is to vent the walls so if it condenses, it can dry. But, again a big but, there are so many different things to account for that there's no set rule.

this is basement we are talking about, the dirt outside is always wetter than the air inside.

I am assuming NJ construction is not that different than ONT construction.
 

iGas

Diamond Member
Feb 7, 2009
6,240
1
0
Not giving a professional recommendation (I did a chunk of my masters on building science = insulation and moisture), but watch out when you do that.

Remember that warm(er), moist air inside touching cool surface causes condensation if cool enough. Waterproof the outside, and the water can't get in, but the water also can't get out - this depends on if you drywalled and framed your basement though and WHERE in the wall it condenses. If you didn't insulate, then nothing to cause mould and it can dry. Mould eats the sugars in paper/tree products, IIRC, so none of that shit = mostly okay.

Long story short, it's one big clusterf*ck when and no one's completely sure on how to properly insulate and moisture-proof a basement. Best practice is to vent the walls so if it condenses, it can dry. But, again a big but, there are so many different things to account for that there's no set rule.
I'm not sure as to the local building code in your area or the OP, but the building code in my area required that basement have opening/s pending the basement volume for ventilation, and it must be heated.
 

Imp

Lifer
Feb 8, 2000
18,828
184
106
this is basement we are talking about, the dirt outside is always wetter than the air inside.

I am assuming NJ construction is not that different than ONT construction.

Air voids in soil, imperfect seals, diffusion within materials, wicking, etc. Lots of ways water can get out. Lots of ways water can get in too, which would make a crushed stone perimeter helpful along with a water barrier as mentioned previously. So, it's a balancing act and still a bitch to deal with.

Problems usually arise when you start finishing your basement.