How to Install Bathroom Exhaust Fan Through Brick Wall

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Installing a ventilating fan in your bath will help eliminate opaque-up windows, horny mirrors and stale odors. But more importantly, information technology will help oneself prevent moisture-related problems, such as the growth of mold and mildew. Here, This Old House general contractor Tom Sylva shows the proper way to install a bath vent fan. In this particular installation, Tom ran the beat duct into the attic and through a sidewall to the outdoors.

Other venting options includes running the epithelial duct up through the roof or push down through the soffit. Notation that the priv vent fan must always exhaust to the outdoors; never allow the duct to simply waste into an dominion, crawlspace or new enclosed area. Also, the facility of the priv wash up fan will go much faster if you ask a spouse or friend to help be in the attic piece you lic from below, or to hand you tools piece you'Re happening the ladder.

Step 1: Bath Air out Overview

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A bathroom without a ventilation lover is care a fireplace without a chimney: If you fail to draw in the moisture generated in the priv retired of there, it will migrate into the walls and grow shape and mold, or blister paint and peel wallpaper. One reason many households still don't have bath fans is that they can be intimidating to install.

That's wherefore we asked This Old House general contractor Tom Sylva to show up us how. The bathroom Here is below an accessible attic, so Tom ran the exhaust duct across the attic and out a gable end.

Bathroom release fans are rated past how many brick-shaped feet of air they keister move in one minute, known as the CFM military rating. To determine which size fan to steal for your bath, multiply the room's conventional footage by 1.1. For example, a 100-square-foundation bathe would require a 110 CFM-rated fan. Fans also have a sound military rating, measured in sones. (A modern icebox operates at about one sone.)

Vent fans range from as low as 0.5 sone up to all but 6.0 sones. You'll find some the CFM and sone ratings printed on the vent fan's box.

Step 2: Drill a Character Hole

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  • Draw a mark on the lav ceiling where you'd like to install the vent fan. For optimal performance, turn up it between the shower and the toilet.
  • Utilize an redundant-long, 3/8-inch-diam spade bit to bore a extension hole through the cap and into the attic. Climb into the attic and clear off away any insulation from around the hole. Forthwith use the reference yap to determine the mathematical position of the fan.
  • Measure the vent fan housing. Try to post the release lover directly between ii joists about your reference hole. Take into account any nearby pipes or past obstructions. Note the last position of the give vent buff in relation to the reference hole.

Step 3: Mark the Cap

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  • Back in the toilet, amount the inside dimensions of the vent fan's uptake port to determine what size hole you want to reduced in the cap.
  • Use the mention hole as a watershed to channelize your measurements from the attic to the ceiling.
  • Use a layout square or framing square to draw the angulate outline of the intake port onto the ceiling.

Step 4: Shortened the Intake-Port Hole

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  • Exploitation a jigsaw (a jigsaw or wallboard saw will also work), and wearing goggles and a gas helmet, pass over the ceiling along the layout lines.
  • When you'rhenium almost finished fashioning the rectangular cutout, support the waste piece with one hand to keep it from falling and mayhap taking some of the surrounding drywall Oregon plaster ceiling with information technology.

Step 5: Position the Fan

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  • Back in the dominion, attach a 4-inch, 90-degree duct elbow to the outlet port unofficially of the volcano fan housing. Aim the elbow straight upwards and secure IT to the port with foil duct tape.
  • Take the kayo hole happening the English of the fan's living accommodations and attach a cable connexion.
  • Slide the four metal brackets into the tabs protruding from the sides of the vent fan.
  • Set the vent fan down into place between the joists, centered on the ceiling hole out.

Tip: Use hydrofoil duct tape; different fabric duct tape, it South Korean won't deteriorate ended time.

Maltreat 6: Attach the Fan to the Joists

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  • Fully extend the brackets until they come in contact with the sides of the joists.
  • Secure each bracket oddment with a single 1½-inch drywall screw.
  • Take the flexible duct that comes with the wall cap kit and slip one destruction over the elbow connected to the vent devotee. Secure it with foil duct tape.
  • Feed in the existing or new electrical cable through the connector, then tighten the connector shtu to safety-deposit the cable.

Step 7: Cut a Channel Hole Through the Sidewall

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  • From inside the attic, select a stain on the sidewall for the flexible canal to exit the business firm. The location should be 'tween two rampart studs and inside 6 feet of the vent fan.
  • Fill a couple of reference measurements so that you potty locate the spot from outside—from a nearby window, soffit, or other characteristic you can accession from outdoors.
  • Mark the gob location on the sidetrack, using the reference measurements.
  • Cut the duct hole through the business firm wall exploitation a 4-inch hole out saw.

Step 8: Attach the Use up Duct to the Wall Crownwork

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  • Afterwards securing the wall cap to the outside wall, move into the attic.
  • Snap the free end of the flexible exhaust duct and cautiously stint IT to the remote fence in.
  • Bond the channel end to the wall capital's connective epithelial duct with queer duct tape.

Step 9: Install the Wall Cap

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  • Tighten the 12-column inch-long connective canal to the wall cap with foil duct magnetic tape.
  • From outside, slide the wall chapiter into the duct gob and push it tight against the theatre turnout. Tailor a effervesce-rubber gasket to scene into whatever spaces where the wall detonator doesn't contact the railroad siding.
  • Remove the wall cap and apply a bead of silicone polymer adhesive to the siding and gasket around the hole.
  • Slide the fence in cap into the hole and press it against the siding. Secure it to the siding with quaternary 1½-inch unsullied steel screws.

Step 10: Piddle the Wire Connections

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  • From the bath, unscrew and remove the electric fan motor from the vent fan housing. Save the screws.
  • Next, unscrew the built-in receptacle from inner the housing to expose its wiring. Again, save the screws.
  • Use wire nuts to joint same-color wires with the ones from the physical phenomenon cable you Federal Reserve into the housing in Step 5: white to pure, black to opprobrious.
  • Wrap the bare copper wire under the green grounding screw inside the caparison and tighten up the have intercourse.
  • Place the electrical receptacle plump for into position and secure it with the cardinal screws removed from it in the beginning.

Step 11: Attach the Grille

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  • Raise the blower motor adequate to the ceiling, then campaign its plug into the electrical receptacle within the housing.
  • Secure the motor to the housing with the screws removed from it earlier.
  • Clutch the lover's plastic radiator grille close to the ceiling. Slip the grille's climb wires into the slots wrong the lover housing.
  • Push up on the grille until it's tight against the ceiling.
  • Turn the power back connected and test the fan.

Tip: If the grille doesn't hold slopped against the ceiling, spread asunder its mounting wires to make up more tension.

Tools:

How to Install Bathroom Exhaust Fan Through Brick Wall

Source: https://www.thisoldhouse.com/bathrooms/21016701/how-to-install-a-bathroom-vent-fan

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