- Model Number
- unknown
- Age
- More than 10 years
I have a microwave that is vented out a flat roof. The unit was installed years ago. The vent pipe sticks up about 3' above the roof, and there were two 90 degree elbows in an upside down "U" attached that made the exhaust blow strait down towards the roof and presumably prevent rain from getting down the pipe and into the microwave. The microwave started making a banging noise (when the fan was not on!) when a wind blows across the roof. The elbows were old and loose and I assumed that the elbows were making the noise.
Today, I replaced the two 90 degree elbows with a hat shaped rain cap but the blowing wind still makes a banging noise. I guess that the wind has access between the hat and the mounting. Did I make a mistake and is the "U" shaped 90 degree elbows the proper way to terminate this vent? Or is it more likely that there is something going wrong at the microwave that is causing this noise?
Any feedback would be appreciated!
Today, I replaced the two 90 degree elbows with a hat shaped rain cap but the blowing wind still makes a banging noise. I guess that the wind has access between the hat and the mounting. Did I make a mistake and is the "U" shaped 90 degree elbows the proper way to terminate this vent? Or is it more likely that there is something going wrong at the microwave that is causing this noise?
Any feedback would be appreciated!