The roof of the bathroom is leaking, and there are a lot of water droplets, why?

Summary. The roof of the bathroom is leaking, and there are a lot of water droplets, why?

The ceiling of the downstairs bathroom is this uniform little droplet.

In the case of excluding resurgence, then it is possible that there is water on the upper floor, so it will cause water seepage below.

There is also a possibility that the temperature on the roof is very high and the temperature in the bathroom is very low, forming a physical reaction, resulting in water droplets on the smooth side, which is very similar to the return to Nantian. However, if you want to rule out this situation, it is likely to be water seepage.

Stagnant water. There will be no standing water in our house.

Isn't there a water outlet for general water leaks? How is it such a uniform hanging bead?

Then it is a physical reaction, the outside is hotter, the inside is cooler, then this water droplet will be formed.

Then it is a physical reaction, just like when our car turns on the air conditioner, it is hotter on the outside, and when it is colder inside, some water columns will be formed.

Our family has more water for people, and less people downstairs live and the ventilation is not good. Last year, it was also said that there were water droplets, and the ceiling was dismantled, and there was no more. It didn't get wet when I touched it, but this time I said it was.

If we were leaking, even if there were no water droplets, the ceiling would be wet.

If there is no water on the roof, then it is likely that this is the physical reaction, and the bathroom space is narrow and damp, which is prone to this phenomenon.

Especially if some houses are equipped with thermal insulation, then it is particularly easy to have this kind of water.

There must be a leak point on the roof, and the leakage point must be found first and then treated.

The ground is leveled with cement mortar, and then waterproofed, the ground is cleaned first, and it is repeatedly painted 2 to 3 times with high-permeability modified epoxy waterproof coating (KH-2). The joints between the wall and the ground and the joints of the pipes between the water and the water are the places that are most likely to cause water leakage in the bathroom. The decoration team is required to do a good job of cement mulch for the upper and lower water pipes of the kitchen and bathroom, brush 10 to 20 cm of high-permeability modified epoxy waterproof coating (KH-2) from the ground, and then redo the high-permeability modified epoxy waterproof coating (KH-2) on the ground to enhance waterproofing, only in this way can it be better placed.

Leakage test "test waterproofing after the completion of the waterproof project, do the bathroom leakage test, first seal the door and the drain, fill the bathroom ground with water to reach a certain liquid level height, and make a mark, if the liquid level does not drop significantly within 24 hours, especially the roof of the downstairs house does not leak, the waterproof will be qualified.

Water vapor, if not, it's the waterproofing upstairs is not done, and the floor drain is the one.

It's not good to ventilate, and if you take a hot bath, there will be water vapor that will condense into droplets on the roof.

Upstairs is waterproof and leaking, or the sewer pipe is cracked.