![]() There are a few things you can do to avoid these types of smells. Do people regularly fill water into their floor drain to avoid this? Or do I overestimate how short it takes for the water to evaporate (I am btw in CM where the humidity isn’t high)? Previously I thought the issue was with the floor drain’s U-lock drying out, which I would expect is also an issue. I have experienced sewage smells most of the places that I have stayed in Thailand, and as I am looking into doing an en suite bathroom layout (without a door), I would like to get a little wiser about what the problem is with thai plumbing that seem to exacerbate this problem (so I can hopefully avoid it). OK thanks! So the gas did push through the cement, that's what I suspect is happening in my case too. Or am I on the wrong track? Are the other drains still possible culprits, was my floor drain cover insufficient? Can it be something else, like the extractor fan vent (the smell is worse when the fan is off, but that seems quite natural to me)?Īny ideas would be very much appreciated. So my question is, can the toilet bowl seal be leaky and sewage gas come up "within/under" the toilet bowl and push out through the plaster/cement floor seal (and also through the additional silicone) ? I added two layers of silicon on the cement/plaster seal of the toilet bowl to see if there'd be any difference. It seems like the idea is that in case the toilet bowl seal would not be tight, it doesn't matter since the outer cement/plaster seal will hold. It beats me how they can ensure a tight seal with that design, but they then seal all around the bottom against the toilet floor by putting cement/plaster to the floor. the connection between bowl and drain is invisible. I noticed that in Thailand they use completely integrated toilet bowls, i.e. This to me points to the toilet bowl drain, but I'm still not completely sure. In my mind, it would be hard for gas to get trough in any significant quantities.Ģ) Plugged the sink and filled it with water. To investigate the origin, I did the following:ġ) Sealed off the floor drain by filling water in the simplified U trap + using several layers of quality cling film on the drain opening as well as on both sides of the lid + taped liberally with gaffa tape on the top of that + placed additional covering items on top of the lid. Floor drain with standard simplified U trap under the lid. There are three drains in the toilet area: Given the times this occurs, I assume the smell is related to sewage. The toilet bowl, a new Cotto model, functions properly. No bubbles coming up through the water in the toilet bowl. No smell at other times, and no such smell in any other rooms, including the adjoining shower/bathroom, nor in the kitchen. Strong and very bad smell in toilet on work-days mornings and evenings ("peaks" around 8 AM and 8 PM). Looking for someone experienced with plumbing who can help shed some light on this:
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