Install Bathroom Fan Duct Roof

To install a roof vent start by choosing a good location from inside the attic and then pound a nail all the way through the roof at that location so you can find the spot from outside.

Install bathroom fan duct roof.

It is because of this that many builders tend to advise against this method. This system is quiet too. Start in the attic and drill a hole through the roof in the desired vent location. For a fan and light switch with existing wiring splice the white wires and connect the grounds securely with wire.

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. 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. Because the fan is in the attic you ll hardly hear it.

A single exhaust exits through the roof figure a. Center the nail between two rafters. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. From the roof find the nail and use the utility knife to cut roof shingles from around the nail.

Here is the link to th. The duct should vent to the outside. You mount a switch in each bathroom. 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.

In order to accomplish this the roof has to have a hole cut in it. Try to keep it close to the fan location. From inside the attic drive a nail through the roof directly above the bathroom vent fan. Secure a 4 inch duct to the duct connector with hvac tape or a clamp.

Look for the special fans starting at 160 at heating cooling equipment dealers. Connect power to both switches through two pigtails spliced to the feed wire. This involves running ductwork from the fan usually though an attic and out through the roof. From up on the roof use a jigsaw or reciprocating saw to cut a 4 in.

If you don t have an attic duct see the installation steps later in these instructions. Leave the drill bit sticking through the roof so you can find the hole.