Sifu
SAWHORSE
- Joined
- Sep 3, 2011
- Messages
- 3,326
Ok, need some personal and professional help here. I bought a condo in Mexico. I purchased it in the middle of construction, as they were building the top floor/penthouse. My unit is the top floor and penthouse rooftop. I took possession in January, and spent a couple of weeks there getting it furnished. While I was there I noticed a slight sewer gas occasionally. But, as some of you may know, that is "part of the Mexican Experience" which you can experience everywhere, and I assumed it was just a natural backdraft from the open air plumbing chase coming in the bathroom window. I am currently renting it to someone for a month, and they have informed me the odor is unbearable. Many other residents have told me they too have it (though none say it is "unbearable", so that is really in the nose of the smeller). There are a lot of problems with the plumbing as far as code is concerned, but code plays no part in MX. The two big problems I THINK are causing this are the lack of a stack vent and possibly no trap in the shower. I have not yet confirmed the trap, but from independent sources I have been told "they don't install traps in MX". I know this to be at least partially untrue, since all of the sinks have traps. I do suspect however, that there may not be traps in the showers. I had no idea this was even a possibility since I thought traps were universally accepted and installed. Ironically, on inspection I made them trap the dishwasher drain to prevent this very issue. Unfortunately, I never even considered the idea that they didn't trap the showers.
I am going back in a few weeks to assess the situation, with snake and borescope in hand. I hope to convince them to install a stack vent at the top, or at least let me do it. However, if there is no trap, it is likely impossible at this point to install one.
Each of my bathrooms drains through a horizontal branch into an open air shaft that runs from the basement (parking level) to the open air at the top of my roof (5 total levels). It may be possible to install a trap on the branch then reconnect it to the soil stack, but it will not be easy, and I may not get permission. I also may be able to install a vent at the top which may at least give the gas an easier path than back into my showers. A trap at this location would double trap the sink and toilet, but I'm not sure this is a concern as long as the new trap maintains a water seal.
There are some products out there that can be retro-fit into the shower drain that are trap seals that allow a one-way water flow, up to 12gpm (per the MFR). Has anyone seen or used one of these? Below is just one of many on the market. It is MX, and water flow isn't great so I don't think this would slow the drainage enought to be a problem, but of course I won't know until I try.

Forget code, it doesn't exist in any appreciable way in MX, and I can't use this as a basis for compelling alterations. What I am looking for is a way out of the smell, or a way to at least minimize it as much as possible, and take it from "unbearable" to "part of the Mexican Experience". Any suggestions short of citing code that I can't use will be appreciated, looking for what might work, not what might meet code.
I feel like a zero here, as avoiding this type of thing is my day job, I just never imagined a scenario such as this.
I am going back in a few weeks to assess the situation, with snake and borescope in hand. I hope to convince them to install a stack vent at the top, or at least let me do it. However, if there is no trap, it is likely impossible at this point to install one.
Each of my bathrooms drains through a horizontal branch into an open air shaft that runs from the basement (parking level) to the open air at the top of my roof (5 total levels). It may be possible to install a trap on the branch then reconnect it to the soil stack, but it will not be easy, and I may not get permission. I also may be able to install a vent at the top which may at least give the gas an easier path than back into my showers. A trap at this location would double trap the sink and toilet, but I'm not sure this is a concern as long as the new trap maintains a water seal.
There are some products out there that can be retro-fit into the shower drain that are trap seals that allow a one-way water flow, up to 12gpm (per the MFR). Has anyone seen or used one of these? Below is just one of many on the market. It is MX, and water flow isn't great so I don't think this would slow the drainage enought to be a problem, but of course I won't know until I try.

Forget code, it doesn't exist in any appreciable way in MX, and I can't use this as a basis for compelling alterations. What I am looking for is a way out of the smell, or a way to at least minimize it as much as possible, and take it from "unbearable" to "part of the Mexican Experience". Any suggestions short of citing code that I can't use will be appreciated, looking for what might work, not what might meet code.
I feel like a zero here, as avoiding this type of thing is my day job, I just never imagined a scenario such as this.