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Bathroom Fan Venting

Bathroom Fan Venting


Richard Acree

Recently I read an article on Realty Times by Pheobe Chongchua that said that Bathroom Remodels Become More Popular, compared to other renovations. It is an interesting article and made one point that I especially liked as a Home Inspector in Nashville. In note 4 she is talking about bathroom fans and she say, "but bathroom ventilation systems that exhaust to the outside are vital". This I really liked!

One of the common issues we find in attics is bathroom fan vent lines that terminate either to the inside of the soffit or to the attic itself. Both situations are bad! See the pic below.

This situation can and has caused mold growth to start in the attic and spread elsewhere inside the house. HABITEC Home and Building Inspections, LLC, recommends that all bathroom fan vent lines terminate at the exterior of the house. The photo below is what the vent lines should look like when running through the attic towards the soffit. Usually it is difficult to see the actual soffit penetration from inside the attic.

Below is a picture of the louvered termination port at the exterior eave. This is what it should look like. This is a small louvered door usually cut into the soffit. This works much better and guarantees the moisture (and most of the odors) from the bathroom will end up outside. Much better!

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Thank you,

Richard Acree

Comments in this article are the copyrighted intellectual property of Richard Acree, President, HABITEC Home and Building Inspections, LLC, and contributing members of the Active Rain Real Estate network, and are intended to educate and otherwise assist home owners, sellers and buyers, building owners, sellers and buyers, realtors, real estate investors, property managers, and lenders in the process of owning, buying or selling homes or commercial buildings. HABITEC is a residential (home) and commercial building inspection company serving Middle Tennessee including Nashville, Brentwood, Franklin, Murfreesboro, Smyrna, Mt. Juliet, Hendersonville, Dickson, Belle Meade, Columbia, Spring Hill and more! In addition to building inspections HABITEC offers Environmental Services for mold assessments, radon testing and water quality analysis. Additional information about HABITEC can be found on our website at, or call 615-376-2753.

Richard Acree is the author of the HABITEC Home and Building Inspections Blog and founder of the ActiveRain Group Tennessee Home and Building Inspectors. All are welcome to join and see more blogs like this one.



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