Install Bathroom Exhaust Fan Through Roof

From inside the attic drive a nail through the roof directly above the bathroom vent fan.

Install bathroom exhaust fan through roof.

And under while medium bath fans work well for bathooms 70 to 100 sq ft. For bathroom over 100 sq ft use a large or exhaust fan to circulate the air. Climb into the attic and clear away any insulation from around the hole. If the bath exhaust fan is used regularly it will help melt snow.

It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly. How to vent a bathroom exhaust fan ipower vent hose. 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. Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof.

In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. Https amzn to 2ynuz8u participate in giveaways. Avoid venting through a soffit vent or ridge vent. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.

Draw a mark on the bathroom ceiling where you d like to install the vent fan. Small bath fans provide adequate bathroom ventilation for 79 sq ft. This involves running ductwork from the fan usually though an attic and out through the roof. Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic.

In maryland in any case i m guessing that deep snow is rare. From the roof find the nail and use the utility knife to cut roof shingles from. The master bathroom and the 2nd bathroom vent through the roof and through the same opening. Center the nail between two rafters.

All of that said commercial roofers install exhaust fan terminations through flat roofs all the time. Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood. 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. For optimum performance locate it between the shower and the toilet.

Make sure that your roofer is familiar with flashing methods for making this type of penetration leak free. First you ll partially block your roof vent with the piping reducing the flow of cooling air through your attic. If you have access to the attic the fan can vent either through a gable wall or roof.