How To Connect Bathroom Fan To Roof Vent

The lower half of the flange sits on top of the shingles.

How to connect bathroom fan to roof vent.

You mount a switch in each bathroom. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. Slide a flat pry bar underneath the. Table of contents hide.

Over there mount the vent hood using tri polymeric locking seal paste and put the nails to strengthen it. For optimum performance locate it between the shower and the toilet. Then drill a hole on the roof top. How to vent a bath fan through the roof 1.

Apply a bead of asphalt roof cement on the bottom of the vent. This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. From inside the attic drive a nail through the roof directly above the bathroom vent fan. Center the nail between.

It is because of this that many builders tend to advise against this method. In order to accomplish this the roof has to have a hole cut in it. Several different ways you can move that hot air to the outside. One is to route it over to a soffit vent and attach it to the back of the soffit vent but this can work against your exhaust fan because that s actually an air intake so not as good as other methods.

Connect the red wire to one switch terminal and the black wire to the other terminal. Slide the vent under the shingles so they cover the top half of the vent flange. This system is quiet too. Climb into the attic and clear away any insulation from around the hole.

From the roof find the nail and use the utility knife to cut roof shingles from around the nail. Nail the lower corners with roofing nails and tar the heads. For a fan and light switch with existing wiring splice the white wires and connect the grounds securely with wire. Another method a little bit better is if you have a gable style roof and a gable vent on one end of the house you can attach this to the back of a gable vent.

To vent a bath fan through the roof you must first prepare a ductwork connecting the roof top to the bathroom. Draw a mark on the bathroom ceiling where you d like to install the vent fan. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. 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.