30+ How To Vent A Bathroom Fan Through The Roof Images. Congratulations on doing your own bathroom remodel. Retrofit roof vent installations require proper interlacing with roof shingles (not just gobs of tar);
If you vent through the roof, condensation will drip back into the interior. From the roof, find the nail and use the. Hot air likes to rise.venting through the roof is the shortest path so it has the least possibility of condensation, and shorter runs.
Venting it directly into the attic would promote mold.
Now you know how to install a bathroom exhaust fan, which can easily remove moisture and bad air from your bathroom with the flip of a switch. Venting the moist air from the bathroom exhaust fan to outside can easily be done with the proper tools and techniques. Get into the roof crawl space above your bathroom. Learn how to how to install a new bathroom fan in just a few steps.