I bought a fixer upper and in the process of tearing down one of my bathrooms to retile, I discovered that my plumbing system is completely unvented and has a lot of issues... so I'm planning to rectify this.

I've laid out a plan that should work for my house. I'm an amateur, but I've been looking at the code for a while. Is this in the right ballpark? Any glaring issues here?

Thanks.

When you're using a lavatory and tub as a wet vent for a toilet, the pipe needs to be 2" , by the drawing it looks like you have planned to use 1 1/2". Other than that it looks pretty good to me.

First off I see you are in Massachusetts where home owners are not allowed to do there own plumbing. If caught you will have to tear out all the work you did then have it done by a licensed plumber. You could also face fines up to $2,500. AAV's are not allowed in Ma and the wet vents must be 2"



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Wow, really? I was drawing up these plans to submit to the city for a permit... but I had no idea they had that restriction here. Guess you saved me from looking like a @#$%& at the inspector's office.

Leave it to Massachusetts to over-regulate. It's a good rule for plumbers, but they must get a lot of hack jobs in the state from people who can't afford a plumber... I think a lot of people would DIY and happily go through the inspection process (even if it means paying to be inspected and re-inspected after corrections), but without an avenue for that it's all or nothing.

Funny about that AAV — that's part of my current plumbing system and was installed by a plumber! He's actually the one who told me the other parts of the system wasn't up to code, so I guess I'll give him a call (or maybe someone else considering he installed an AAV) and see what the damage will be to replace the entire house's system the correct way.

Thanks for letting me know.



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Oh, this is an interesting post. Please do advise us what happens. I'm surprised the plumbing violations were not visible during the home inspection. I also wonder if permits were pulled for the plumbing work by the original owner(s). We the plumber a "licensed plumber" ?


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I'm pissed at the inspector, but I'm pretty sure the contract leaves little recourse there. I could probably fight to get the inspection fee back, but that's hardly worth the effort.

I knew nothing about plumbing aside from basic fixture repair when I bought the house (my first) and he missed a few things a plumber noticed immediately by being in the basement for 5 minutes. The roof doesn't even have a vent stack! Nothing about the plumbing was even mentioned in the inspection report outside of the age of the sewer pipe coming in from the street (it's a bit older). There was a permit from about 20 years back for plumbing work, so I just thought the house just had 20 year old plumbing work.

I feel like a buffoon for not doing some more research into it for myself at the time and putting all my trust into the inspector... this lesson is coming at a high price.

I appreciate all the advice so far. Next time I buy a house I might just diagram everything out and ask for opinions on the internet!



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If only we could enforce #831 of the Code of Hammurabi

'google' it



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