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From: Danny Lipford
Lavatory exhaust followers carry out an necessary perform in eliminating extreme moisture from your property. When ventilating a toilet exhaust fan, make sure to vent the air to the surface, relatively than into your attic, the place it could actually trigger mildew formation.
The air flow choices a WC exhaust fan embody (the perfect at worst):
Via the roof or an out of doors gable.
Behind a gable vent.
Behind a soffit vent.
To enhance air flow and cut back the resistance of air within the vent pipe:
Be sure the vent pipe is as brief and straight as doable.
If doable, use a easy steel pipe relatively than versatile ducts.
Watch this video to be taught extra.
Transcript of the video
Danny Lipford: Jim asks, "Is it okay to have a fan for the tub in my attic?"
No, it's by no means a good suggestion to have a suction fan in your house that flushes all that scorching, humid air out of your attic. This could trigger many mildew and mildew issues on the underside of your rafters and deck, in addition to insulation of your insulation.
You possibly can transfer this scorching air in numerous methods. One is to route it to a soffit vent and fix it to the again of it, however it could actually damage your exhaust fan as a result of it’s truly air, which isn’t as efficient as different strategies.
One other, considerably higher, technique is to connect a gable roof and gable vent to at least one finish of the home on the rear of a gable vent.
However one of the simplest ways to get that scorching, humid air out of your home is to get it by means of the roof and canopy it with a roof. Even higher, as a substitute of utilizing such a versatile pipe, use a easy steel pipe to cross it by means of the roof.
Learn how to correctly ventilate a toilet exhaust fan in an attic