How To Bring Bathroom Vents Together In Attic

Choosing a whole house fan.

How to bring bathroom vents together in attic.

Each bath fan should be on a separate 4 or larger duct and the outside vent portion must have a baffle damper to prevent anything from coming into the duct work. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. Well the bathroom vents if they re near each other could be brought together in the attic and then brought out to one termination point. Slide the vent under the shingles so they cover the top half of the vent flange.

Bathroom vent exhausting into attic space. You obviously don t want to dump all that air into the attic. The lower half of the flange sits on top of the shingles. The 2nd bathroom vent drips on the floor and is ruining the ceiling.

You can usually find these on back to back sinks. This system is quiet too. Here s the problem your soffit vents are your roofs air intakes and the roof vents are the exhaust. This allows both drain lines to tie together in a sanitary cross.

Apply a bead of asphalt roof cement on the bottom of the vent. The reason i had to do this was because the customer refused to go out the roof twice. It s warm it s moist it s humid and it s going to ruin your insulation s effect. The loop vent is a solution for many freestanding sink codes.

The master bathroom and the 2nd bathroom vent through the roof and through the same opening. One could be taking a dump or shower and the user in the other bathroom would nearly pass out from the smells moisture. A single exhaust exits through the roof figure a. This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo.

Nail the lower corners with roofing nails and tar the heads. When a bath exhaust fan is directed to flow out of the soffit area a ton of this warm moist air wafts back towards the soffit vents and will start to rot your roofs rafter tails along with allowing mildew and mold to start forming on your roof. It loops up an around before connecting to the drain pipe allowing ample ventilation to take place just behind your fixture. You mount a switch in each bathroom.

Those swinging flaps are not air tight to say the least. To be properly terminated bathroom fans should exit the home through stem vents that are specifically used for this purpose.