Wet ceilings aren’t always from roof leaks!
Water stains on the ceiling don’t always indicate a leak up on the roof. Many times the stains come from, or are caused by, problems up in the attic. Here are three of the main culprits:
ATTIC-MOUNTED A/C COMPRESSORS. Clogged condensate tubes will cause collection trays to overflow. And improperly sealed or insulated ducts can cause condensation to form and drip into the house. A quick look around the attic will help you track down this problem.
BATH AND KITCHEN VENTS. These vents are often vented directly into the attic (or become detached from roof vents). They can pour gallons of water vapor into the attic, where it’ll freeze or condense and drip back into the house. Again, a visit to the attic will locate it. Even an uninsulated exhaust vent that is vented through the roof can create condensation on the duct. That moisture then leaks back into the house, usually around vent grilles. Those ducts should be replaced with insulated ones.
ICE DAMS. Ice buildup on eaves, coupled with water coming in along outside walls, is a sure sign of ice dams. They’re usually caused by some combination of improper attic venting, attic bypasses and inadequate attic insulation. To learn more, search for “attic bypasses” and “ice dams” at familyhandyman.com.