Cutting a Bathroom Door to improve Airflow and Ventilation in a spray foam insulated house.

I cut the bottom of our bathroom door off to get better airflow and ventilation into the bathroom. The ERV is not pulling enough steam out of the bathroom when the shower is on.
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[@josephmerritt1411]

Thanks for the video. I have some suggestions for you. You didn't show or describe the exact location of the ERV vent relative to the shower. What is the vent size (3-inch diameter, 4-inch diameter, etc.)? Before cutting the door why not do a static pressure measurement with the door closed and ERV running? Then, repeat the same test after the cut door to examine the difference. Knowing the net area and the delta pressure, you can calculate how much CFM flows under the door. Does it match your expectations?

[@dpruid5144]

Did it help? Thinking of doing the same thing. Thanks

[@billhilson8320]

Good mod... if the HVAC engineers did their job right we would have better balance between supply and return air and wouldn't need to undercut the dang doors! A humble tip: spray or paint some Zizzner's B.I.N. primer on the raw edge of that door... now you're done! 😀