I've lived in my house for about a year now and I have this small room (maybe 5×6) that contains my washer and dryer. I have central air and this room does not have a vent. Also this room does not have an exhaust. Instead it just has a drop ceiling. I checked my exhaust for the gas dryer and it's fine.
I noticed a few days ago that the room was very humid. I went in the attic and noticed that the underside of my insulation located directly above the drop ceiling was black. To me this means that the previous owners have had issues with this due to the massive amount of black insulation. Since then I put our dehumidifier in the room until I can figure out how I should fix this.
I've considered a few options for fixing this issue and would like to know if anyone has had this issue and how they addressed it if they did.
1) Install flex-duct from the existing A/C ducts to the laundry room. This would cool the room and lower the moisture naturally.
2) Install an exhaust fan with a humidity sensor.
3) Keep the dehumidifier in the room.
Best Answer
Try installing a vent in the door, it will allow the room to breath. Make sure the exhaust from the dryer is sealed all the way around where it exists the wall, then go outside and do the same thing. Check the roof edge and make sure you aren't having water drain behind the gutter into the wall. Then climb into the attic when it rains with a big light and watch for water.
Also, get rid of that mold.. it's really bad for you.