2nd Floor Bathroom Venting

If the new bathroom is on the second floor the bathroom s main drain will have to travel through the wall on the first floor and down to the basement or crawlspace.

2nd floor bathroom venting.

Is it a must that a 2nd floor bathroom vent and drain into the same stack. The same holds true for plumbing vent pipe. Add a small return vent duct to each room on the second floor. If the drain lines in your home have poor venting as in figure a for example water rushing down the drains will pull water from nearby p traps.

Use a layout square or framing square to draw the. Doing a second floor major remodel. For 1 the furnace fan running all day with the a c on might solve some milder heat trap problems for your second floor. You might also want to try adding a ceiling fan in critical rooms like a second floor bedroom.

Mark the ceiling back in the bathroom measure the inside dimensions of the vent fan s intake port to determine what size hole you need. Can i vent the washer double sink tub and shower into the 4 main stack but drain and tie in those four components into a 2 drain that also exists in my basement but is not vented. In the ipc use a 1 5 sanitary tee upside down or in the upc use a 2 x2 x1 5 san tee upside down to make this connection. Also notice the bathroom sink s individual vent tee s right into the toilet s individual vent.

That s done with the appropriate sized sanitary tee that s upside down. The 2 pipes one a 4 master and the other a 3 2nd do not go through the ceiling but into a common box that goes through the roof. Divide the house into two zones one for each floor. If the new bathroom is on the first floor you can probably just tie into the house s main drain line in the basement or crawlspace below.

As water goes down a drain air is needed to equalize the pressure in the drain line. This is the purpose of a venting system. Use the reference hole as a landmark to transfer your measurements from the attic to the ceiling.