My exhaust fan in bathroom is leaking when there is a hard windy rain. Could it be, the rain is pooling around the upper part of the vent and running in? Would it be a good idea to put flashing around the upper part to keep it from running in?
Thank you,
Lorraine

KBC

How does the vent leave the house? from the roof or through the wall?

Tomyslady

It is mounted on the roof.

KBC

And the stack is covered? or open pipe with a pipe boot around it?or a flat roof vent or a curved stack hood?

Also how high is the vent out of the roof?

Tomyslady

It is a flat cover. The total vent height is about 3". It has just started leaking, about 6 months ago. We have had hard rains before.

KBC

OK the flat roof vent probably has lost it's seal.

When a roofer lays the shingle ,the vent cover is installed with the elimination of shingles around the new roof vent.The vent has flashing around it and the roofer applies(hopefully) roof cement around the top and sides to seal the vent.

In time the roof will expand and contract causing the seal to be compromised.

Applying new roof cement(you can use tube form for ease) around the edges,,not the bottom,the bottom should be exposed,above the shingle as to allow water to exit from the vents sides and not under the shingles(below it) but on top.

This should fix the problem.

If it doesn't let us know and we can further address it with you.

KBC

Tomyslady

Thank you very much, my husband will try this.

twinkiedooter

My one bathroom exhaust fan was leaking as well. When my son got up on the ladder and looked at the vent he found that several shingles surrounding the vent had to be recemented with roofing tar and since he did this it has not leaked. Probably just needs retarred.

Tomyslady

Thank you both for all your help.
Lorraine

Rvlec

How steep is your roof pitch?