Two Bathroom Exhaust Fans, One Roof Vent

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Here’s a question from our 5/25/2019 Today’s Homeowner Radio Show.

Harold from Illinois asks, “I have two bathrooms back-to-back. Can I use one of the roof vents for both bathroom exhaust fans?”

We say create the shortest path between the two vents. A two-in-one diverter will allow this to happen.

Listen above for the answer!

Read the blog from the May 25 show and listen to the full broadcast here


  1. One thing is to make sure both of your fans have back-draft dampers so there is less chance of venting from one bathroom to the other


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