Install Bathroom Fan Duct Roof

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

Install bathroom fan duct roof.

A single exhaust exits through the roof figure a. Because the fan is in the attic you ll hardly hear it. This involves running ductwork from the fan usually though an attic and out through the roof. Secure a 4 inch duct to the duct connector with hvac tape or a clamp.

Start in the attic and drill a hole through the roof in the desired vent location. We explain how to install bathroom exhaust fans or vents the vent ducting the vent termination at the wall soffit or roof vent fan wiring bath vent duct insulation bath vent lengths clearances routing and we answer just about any other bathroom ventilation design or installation question you may have. For a fan and light switch with existing wiring splice the white wires and connect the grounds securely with wire. In order to accomplish this the roof has to have a hole cut in it.

Learn the secrets to running anew exhaust line through the outside wall install a fan and connect the ducting and electrical. Connect the red wire to one switch terminal and the black wire to the other terminal. Here is the link to th. Leave the drill bit sticking through the roof so you can find the hole.

This system is quiet too. See below for a shopping list and tools subscribe. From up on the roof use a jigsaw or reciprocating saw to cut a 4 in. Connect power to both switches through two pigtails spliced to the feed wire.

Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. Look for the special fans starting at 160 at heating cooling equipment dealers. From the roof find the nail and use the utility knife to cut roof shingles from around the nail. It is because of this that many builders tend to advise against this method.

You mount a switch in each bathroom. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. If you don t have an attic duct see the installation steps later in these instructions. After tracing the outline of the vent opening on the roofing cut through the shingles with a knife to expose the roof decking and then drill a hole for the vent with a hole saw or reciprocating saw.

The duct should vent to the outside. Try to keep it close to the fan location.