Rangehood leak after heavy storm/rain (roof, microwave, stove, appliance)

[nitynity]

Closing on a property tomorrow, during final walk in inspection, found puddle of water trapped inside kitchen range hood filter compartment. Turned out there was heavy rain/storm the previous night and the water might have got in through the exterior vent pipe. Requested an appliance tech/roofer visit to analyze the range hood working /health condition. It might push down the closing date further.

Now the question, will the water entry affect the functionality/lifespan of the range hood considering there are electrical components involved inside? The unit is 1k+, so not sure if we should just suck it up and go forward with the closing or is it worth a repair credit? Now that we identified the drainage problem/improper vent install, chances are this might have happened in the past as well and could really affect the life of the unit. Also, there was puddle of water on one side of the stove below and one of the burners weren't lighting up as well due to pilot being wet maybe. How you guys move forward in this situation?

What's a reasonable credit to expect for this repair? Any feedback is greatly appreciated.

[Joylush]

This happened after a new roof install where there was a leak around the vent above the built in microwave. Discovered when water was found in the microwave. Dried it, resealed the vent pipe and never had a single problem with the microwave which has more controls than a range hood. If it wasn’t damaged and the leak was sealed, I suspect it won’t affect it at all.

[K'ledgeBldr]

There probably is no problem at all.

As you stated, there was “heavy rain storm”- there my have been extraordinary circumstances- winds, rains that exceeded 1”/hr., etc. and the flue got overwhelmed/was not designed to handle that type of exposure.

Since the water was “inside” the unit- I’ll put little emphasis on the roof leaking. Though it’s possible.

As for the hood’s operation- since it wasn’t in use at the time of the water intrusion, it probably hasn’t effected its performance at all. Obviously, it’s worth having someone take a look at the vent’s roof penetration (I’m assuming that’s where the exhaust exits) to make sure all appears to be in good nick. The vent/flue itself should have some type of hood/arrester that would shed water- hopefully it is there and in good condition also. If the vent exits through a wall- blowing rain can certainly make its way into the duct/flue. And if it’s not sealed/caulked well to the structure’s cladding- that could also be a means of water penetration.

As to your closing schedule- I’ll leave that to your personal discretion, and your agent’s advice. S/he will know better as to how to handle in your state.

[Threerun]

Our exhaust vent has a one way flapper. Closes when not in use- opens when in use. We get high winds here quite a bit (on the Rocky Mountain front) and sometimes I can hear the flapper opening and shutting more than likely due to the turbulent air flow around the roof and its fixtures attached.

Quite probable the rain could have been pushed in because of the volume and velocity of the wind and made it past the flapper (if there is one). I wouldn't sweat it. At worst sealing around the flashing or installing a one way flapper.