Install Bathroom Exhaust Fan Through Roof

Small bath fans provide adequate bathroom ventilation for 79 sq ft.

Install bathroom exhaust fan through roof.

The first step in figuring out how to install a bathroom fan is cutting a hole based on the size of the fan you need. If you have access to the attic the fan can vent either through a gable wall or roof. Draw a mark on the bathroom ceiling where you d like to install the vent fan. This involves running ductwork from the fan usually though an attic and out through the roof.

The 2 pipes one a 4 master and the other a 3 2nd do not go through the ceiling but into a common box that goes through the roof. How to vent a bathroom exhaust fan ipower vent hose. And under while medium bath fans work well for bathooms 70 to 100 sq ft. It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly.

Https amzn to 2ynuz8u participate in giveaways. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent. From the roof find the nail and use the utility knife to cut roof shingles from.

If you re tempted to vent your exhaust fan through an existing roof vent or even vent it into the attic don t do it. Climb into the attic and clear away any insulation from around the hole. The 2nd bathroom vent drips on the floor and is ruining the ceiling. In maryland in any case i m guessing that deep snow is rare.

Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood. For bathroom over 100 sq ft use a large or exhaust fan to circulate the air. Avoid venting through a soffit vent or ridge vent. In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.

Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic. For optimum performance locate it between the shower and the toilet. All of that said commercial roofers install exhaust fan terminations through flat roofs all the time. Make sure that your roofer is familiar with flashing methods for making this type of penetration leak free.

Center the nail between two rafters. If the bath exhaust fan is used regularly it will help melt snow. From inside the attic drive a nail through the roof directly above the bathroom vent fan.