Why is like this Inside Attic having lot of Moisturization Water on Top of Insulation in Winter

tester22

Hi guys, I am having problem in Attic,

1)--I mean Inside Attic having lot of Moisturization Water on Top of Insulation in Winter time, when I move Insulation all Dry in bottom, only Top of insulation this Moisturization Water is there.
Is there any body know from there this water is growing in Attic.
And there is no leak from the Roof also.

2)--This is Town House attach other House on both sides, and on Top Floor Room on both side Ceiling there is Fungus/Mold is growing in Winter time only, so we go inside Attic to look on both Corners, there is no Water at all, only the thing I notice that place is very Cold. And from inside I feel that both Left side & Right side Corners are very cold, because of that Fungus/Mold is growing on both Corners.

Please let know what solution I have to apply on Ceiling Dry Wall on both Corners, to not grow Fungus & Mold.

Thanks

kcopp

Frost melting on the underside of the sheathing... then drips onto the insulation when it warms up.

That is warm moist air working its way up through your house into the attic.

Larry Weingarten

Hi, I agree with @kcopp , so the fix is air sealing the attic floor. This means pulling the insulation back and caulking or otherwise sealing any air leaks you find, particularly at the tops of the walls. The surest way to find leaks is to depressurize the house with a blower door and use a smoke gun or incense stick to find the leaks. The big leaks are easy to find around any pipes, wires, and flues or chimneys.

Yours, Larry

Mosherd1

Do your bathroom exhaust fans vent outside, or are they just stuck up into the attic. Up until a few years ago around here, bath fans were just vented into the attic with the assumption there was enough ventilation up there to dissipate the moisture.  You might also not have enough attic vents, both soffit intake vents and exhaust vents down the ridge.

tester22

yes there is a Washroom on this Top Floor and the Exhaust Fan directly Vent out through Vent Pipe to Roof it is connected, so the Air get out from the Roof.

EdTheHeaterMan

I had my attic ceiling insulated with spray foam. This made the attic warmer in the winter and much cooler in the summer. The foam sealed all the tiny openings making the attic part of the enclosed conditioned space and eliminated moisture problems. This was done in 2012. When I moved out in 2020, there were no signs of moisture damage in the attic.

That may be one way to solve the problem.

Jamie Hall

Personally I prefer @EBEBRATT-Ed ;s approach. It is almost impossible to seal all the air leaks from the occupied part of the house without using spray foam. If you have fiberglass on the attic floor, you also need lots of ventilation in the attic or you will have exactly the problem you mention -- and probably a mold problem on the underside of the roof to add to the fun.

EBEBRATT-Ed

You need to do both. Insulate and seal the attic floor and add vents to the attic. The attic should be as cold as the outdoors.

tester22

Here are the Photos of Attic & Construction time photos also there.
And yes there is a Washroom on this Top Floor and the Exhaust Fan directly Vent out through Vent Pipe to Roof it is connected, so the Air get out from the Roof.

tester22

tester22

I have another problem in my Home around the Windows on mirrors lot of Moistorization Water occupying, so all water leak on the Base, and I clean every day 10 time per Window, and around the Windows Fungus growing, so I clean ever day water.
So what cause this Windows releasing water problem in my Home. This problem I face in Winter time only.

pecmsg

The interior RH is Too High!

jesmed1

tester22 said:

I have another problem in my Home around the Windows on mirrors lot of Moistorization Water occupying, so all water leak on the Base, and I clean every day 10 time per Window, and around the Windows Fungus growing, so I clean ever day water.
So what cause this Windows releasing water problem in my Home. This problem I face in Winter time only.

If you're wiping condensate off your windows 10 times per day, you have a serious problem. Either you are producing too much moisture inside the house (by running a humidifier, for examples), or the house envelope is too airtight, or a combination of both. You need to find out where all the moisture is coming from and stop the source, or you could end up with a serious mold problem inside the house.

If you can't find where the moisture is coming from, try installing a dehumidifier.

Larry Weingarten

Hi, Is there a crawl space under your house? If so, have a look down there and see if there is any water or moist dirt. The water is coming from somewhere. ☔️

Yours, Larry
Ps. Also, have a look at your water meter. Is there any motion on the dial when no water is being used?

Teemok

If it turns out you don't have a roof leak or an improperly terminated bath vent fan or stove hood fan venting in the attic, etc. Water vapor condenses when it's temperature drops below the dew point. Sheetrock and insulation is water permeable. If you have high humidity in the living space the moisture will migrate though the ceiling materials and will condense into water where it cools. Most of the time this happens on the underside of the roof sheathing in a poorly vented attic. In your case it may be happening at the insulation top surface. A cool very humid interior and very cold attic might create the results you are reporting. Lots of: breathing people, cooking, showers, plants or leaks, a wet slab, wet soil in the crawl space. The water is coming from somewhere!

bburd

Gas fired appliances that are not properly vented can add a lot of moisture to the interior of a home. If you have any, check the combustion exhaust vents when they are running.

WMno57

Another thing that can cause high indoor humidity:
Clothes dryer vent leaking humid air to inside of home.