Why is there condensation in the sewer pipe in the shed?

According to the subject, there is a damp slab on the floor of the upstairs bathroom, but there is no obvious dripping, which is actually a leak, but it is not serious. As for the condensation on the outer wall of the water pipe in the ceiling of the bathroom, the main reason is that there is leakage, resulting in excessive humidity in the ceiling. As for the water pipe, there is a section of condensate, and there is no condensate, mainly because of the different thickness of the pipe wall, that is to say, the pipe wall is thick, the insulation effect is better, there is no or less condensate, the pipe wall is thinner, and the low temperature in the pipeline is easy to conduct out, so it is easy to condense condensate on the outer wall of the pipeline.

This phenomenon is caused by constant flowing water, there is a paragraph indicating that the section is in direct contact with water, other parts are not in contact with water, and the water flows directly to a certain part of the pipe through the attachment of the pipe wall, and the water seepage indicates that the waterproof is still not done well, and it cannot adapt to the long-term sleeping bubble, and this kind of sleeping bubble will not be common, but it will be fine after temporary drying.

Yes, the two tubes are made of different materials, and the coefficient of thermal expansion and contraction is also different.

In addition, the ambient temperature is high in summer, coupled with the humid air, the pipe is prone to condensation.

It is recommended to wrap the entire pipe with insulation material to avoid condensation.

The pipe and the shed are two different things. If there is a crack in the pipe, there will be condensation when the water is cooled.

It is caused by the poor waterproofing of the upstairs and the insufficient cement under the bricks when the floor tiles are laid, and the hollow area is too large and the water is accumulated.

The simple treatment is to require the upstairs to use a tool to remove the weak joint powder at the joints of the floor tiles, and then use a plugging agent (powder) to scrape and seal the brick joints while blending, especially on the side of the wall!

As long as the construction is done carefully, the effect is still quite effective, the cost of working hours and materials is not large, and the main material is enough for a bag of plugging agent (10-20 yuan two measurements).It is also a method that is more acceptable to the upstairs.

There is also a way to redo waterproofing and floor tiles, which is generally difficult to accept upstairs, even if you pay for it, they are not willing.

Generally speaking, if you take the first method I said, and carefully construct it, you can actually completely meet the requirements. The construction cost is not large, and it will not have a big impact on the life of the upper floors!