Bathroom Ceiling Vent Leaking

The usual cause is condensation inside the duct.

Bathroom ceiling vent leaking.

The first step is to head to the attic. Quick tip 22 the rain may drain but it s really not a pain. The external exhaust vent should have a flap or louvers that open to let air out but block stuff from blowing in. The bathroom vent may be leaking water when it rains through the exterior of your home.

8 common causes of water dripping from ac vent while there are many things that can cause water to drip from your ac vent this isn t a normal occurrence and should be looked at sooner rather than later. There may be damaged insulation damaged drywall damaged wood framing and there may be mold growing. That said it isn t hermetically sealed. Make sure they aren t damaged or stuck open by debris.

If the leaking ceiling or visible water damage appears below a bathroom kitchen or inside ceiling spaces where you know plumbing pipes are located there is a very good chance that the source of the problem lies either with water supply pipes or drain pipes that have developed leaks. This just allows water to accumulate and may cause a large leak when the water lets go. If your leaking bathroom exhaust fan has been going on for some time it may be a very good idea to remove the actual bathroom exhaust fan and check for damage in the ceiling cavity. If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct.

In winter when the warm moist air from the bathroom hits cool air in the attic or outdoors it condenses sending drips back down the ductwork. However you shouldn t expect for it to come out of your leaking bathroom exhaust fan or ceiling vent. In summer humid outside air condensed on a pipe cooled with air conditioning will drip when humid bathroom air adds to the moisture level. So torrential rain and heavy wind could blow some amount of rain into the duct.

Water stains on the ceiling around your bath fan may indicate a leak coming from the vent cap on your roof but condensation is the more likely culprit. So you re taking a hot shower because you want this stormy night to be as relaxing as it can be. For many years contractors installed bath fan vent ducting incorrectly creating a bend or low loop to catch condensation. You step out of the shower and then there it goes.

Check the vent s damper or protective cover and ensure it s in proper working order.