Bathroom Fan Ventilation To Attic

Options for venting a bathroom exhaust fan include best to worst.

Bathroom fan ventilation to attic.

Either way the vent will have to go directly to the outside and installed with a vent hood cover. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. In those areas ventilation in bathrooms is required but it can be from a window or fan your choice. A single exhaust exits through the roof figure a.

Without properly installed ventilation rooms with high humidity can experience paint or wallpaper peeling or costly damage to drywall and wood structures. Ventilation fans in the bathroom quickly clear steamy mirrors and create a comfortable environment for starting and ending the day. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. To determine which size fan to buy for your bath multiply the room s square footage by 1 1.

The vent hood will have a little flap that opens when air is blowing through the vent but at other times it will remain closed. Look for the special fans starting at 160 at heating cooling equipment. You should never exhaust the bathroom fan directly into the attic. When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form.

How to install a bathroom vent fan. If you vent through the roof condensation will drip back into the interior. The bathroom here is below an accessible attic so tom ran the exhaust duct across the attic and out a gable end. Bathroom vent fans are rated by how many cubic feet of air they can move in one minute known as the cfm rating.

No you cannot vent your bathroom exhaust fan into the attic. Surprisingly bathroom fans are not required by some building codes. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.

I recommend that my clients vent their bath fans out a gable wall if at all possible when not using an hrv or erv that is. This system is quiet too. Bath vent fan installation building codes bath vent fan troubleshooting bath vent fan repair. If you vent through a soffit where attic vents are often located the moisture will get sucked back up into the attic or roof venting.

Bathroom exhaust fans perform an important function by removing excess moisture from your home. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. All municipalities have different requirements but some do not draw a hard line on requiring exhaust fans. We explain how to install bathroom exhaust fans or vents the vent ducting.

You mount a switch in each bathroom.