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annehart1

02:50PM | 11/14/01
Member Since: 11/13/01
8 lifetime posts
Bvbasement
I added insulation to my attic a few years ago. Since then, I have noticed some peeling paint both on the ceiling and the wall near the ceiling along with some mold. This was not a problem before adding the additional insulation. Any ideas?

DH

03:36PM | 11/14/01
Member Since: 09/23/01
242 lifetime posts
Did you add loose fill, Unfaced Batts or Faced Batts?

Did you cover your attic ventilation?

Jay J

03:30AM | 11/15/01
Member Since: 10/26/00
782 lifetime posts
HI annehart1,

In addition to DH's questions ...

In what room(s) are you having this problem? And do you know if your HVAC unit has a humidifier/dehumidifier accessory?

Jay J -Moderator

PS: God BLess America!

annehart1

04:52AM | 11/15/01
Member Since: 11/13/01
8 lifetime posts
Hi DH and Jay,
I added unfaced batts over the existing insulation. I am wondering if I occluded the ventilation from the soffit vents. The attic has two side vents, but no ridge vent. The problem is occuring in the upstairs rooms by the outside wall up near the ceiling and where the ceiling and wall meet on the north side of the house. Jay, I'm not sure what a HVAC unit is, but I'm sure we don't have a humidifier/dehumidifier accessory--my house was built in the late 50's. Thanks for your help, annehart1

Jay J

11:11AM | 11/15/01
Member Since: 10/26/00
782 lifetime posts
Yes, most definitely check that the insulation isn't obstructing your Soffit Vents. (This is probably where DH is heading ...) As an aside, when you have your roof reshingled, have them add a full-length Ridge Vent too. This will allow the air that rises up the Soffits to vent-out through the Ridge Vent. The 'side vents' you're referring to are probably Gable Vents. They don't work too well w/Soffit Vents ...

HVAC - Heating, Ventilation, and Air Conditioning. WHere I was headed was it's possible that your humidifier is set too high. It sounds like that is moot.

Moisture is forming on the cold surface. Warm air rises and holds moisture which will condense-out when it comes in contact w/the cold surface (the cold wall). The north side of the house, obviously, gets no direct sun and is, hence, the coldest side of the house.

Even if your insulation is covering the vents and the insulation is moved, I'm not sure it will solve your problem. You still have a cold wall. Maybe there is a spot or 2 or 3 that is 'missing' some insulation. So look for that when you go up in the attic. Make sure the insulation isn't compressed and that it's 'snug' up against the floor joists. In short, preventing any cold air from coming in contact w/the ceiling is what you want.

And lastly, if your home is tight, then this only contributes to the problem. Bathroom humidity, lots of cooking w/hot water, 'emptying' the hot air from the dryer into the house, among other thins, all contribute to the moisture 'load' in a home. Look at these types of 'things' for ways to control moisture. Adding bathroom fans/vents, and turning on the stove vent, and running the dryer 'exhaust' to the outside will all 'lessen' the humidity in the house.

My best to ya and hoep this helps.


Jay J -Moderator

PS: God Bless America!

DH

03:16PM | 11/15/01
Member Since: 09/23/01
242 lifetime posts
Thats where I was going.

annehart1

06:39PM | 11/15/01
Member Since: 11/13/01
8 lifetime posts
DH and Jay,

Thanks for the info. What about those styrofoam things you can insert in the rafters--Raft-R-Mates--Do you think this would help? I'll make sure the insulation is covering snuggly up to the edge (hasn't moved away at all).

Thanks again, annehart1

Jay J

03:55AM | 11/16/01
Member Since: 10/26/00
782 lifetime posts
Now you've got me thinking. When you said you added insulation to the attic, do you mean you added insulation INBETWEEN the rafters, or on the 'floor' of the attic??? This will DRASTICALLY change my answer if you added insulation between the rafters.

RE: Raft-R-Mates - They're fine if you're insulating between the rafters (which is where I'm headed in my 1st paragraph.) See Insulation Accessories for more info.

I patiently await.

Jay J -Moderator

PS: God Bless America!

annehart1

06:37AM | 11/16/01
Member Since: 11/13/01
8 lifetime posts
Jay
I added the insulation to the floor of the attic only. The slope of my roof is not steep--so that the angle is narrow where the attic floor and the roof intersect. I'm wondering if I occluded the air flow from the soffit vents into the attic with the additional insulation--would that cause the moisture problem I have? Our house is definitely not air tight. We have vents in the bathrooms and the dryer is vented outdoors. Thanks for all your help.

annehart1

Jay J

04:31PM | 11/16/01
Member Since: 10/26/00
782 lifetime posts
Whew!!! Just one more question - Is the mold forming on the ceiling in the attic or on the ceiling in the room below???

Jay J -Moderator

PS: God Bless America!

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