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Neighbors were shocked to see a "private swimming pool" built on the rooftop of a mansion. Experts reveal the truth: very common and absolutely safe

2022-04-26T07:22:12.967Z


Neighbors who live in private housing estates in Kai Tak said that recently they were shocked to see someone building a "pool" on the roof of the housing estate, and at first glance it looked like they had built a "private swimming pool" by themselves. According to the reporter's on-site inspection, the "pool" is not deep, but it covers almost the entire sky


Neighbors who live in private housing estates in Kai Tak said that recently they were shocked to see someone building a "pool" on the roof of the housing estate, and at first glance it looked like they had built a "private swimming pool" by themselves.

According to the reporter's on-site inspection, the "pool" is not deep, but it covers almost the entire rooftop.


Some experts dismantled the truth of the "rooftop pool", referring to the fact that it is not an unauthorized pond or swimming pool, but a common roof waterproof layer test, which usually takes two to three days, and the water depth is not high. It is a temporary test, and the weight involved is not large. It will affect the roof structure.

Some experts estimate that because this test uses "blue water", it looks very similar to a swimming pool from a distance.


In a new housing estate in Kai Tak, a "pool" appears on the private rooftop of some units, which looks like a private swimming pool from a distance.

(Photo by Liang Pengwei)

In a newly completed housing estate in Kai Tak, there is a "pool" on the private roof of some units. The "pool" is huge in size and looks similar to a swimming pool from a distance.

However, upon closer inspection, it was found that the "pool" was only surrounded by wooden boards, the water depth was limited, and blue water was overflowing nearby, making its use questionable.

A typical waterproof layer test

Lai Daming, director of the Building Inspection Center, believes that the "pool" is a roof waterproof layer test, and the "color water test" can be used when the roof is suspected to be leaking and the top-floor ceiling leaks.

He explained that the "color water test" generally uses wooden boards or plywood to enclose part of the roof so that the water storage test can be carried out.

The blue water is easy to observe. When there is water leakage, it can be seen at a glance, making it easier to trace. The "color water test" generally takes about 2 to 3 days to store water and is a temporary test.

He also pointed out that the test is very common, but most of them only use clean water. This time, "color water" is used, and it is estimated that the results will be more accurate.

He said that the roof will be sloped, in order to prevent the water from flowing to one side, so that the "colored water" cannot cover the entire roof, so the water volume will be more, and the use of blue water this time makes it feel similar to a swimming pool.

Lai Daming, director of the Building Inspection Center, said that the test is very common, and other colors can be used in addition to blue water.

(provided by respondents)

Surveyor stresses absolute safety

In addition, the former president of the Institute of Surveyors, Ho Kui-yip, also pointed out that he believed that the picture was a "color water test", because it was only surrounded by wooden boards, and the "pool water" was also prepared with toner, which was similar to the usual test.

He emphasized that the "color water test" is very common, and this method is used to check when there is any suspicion of water leakage on the roof or platform.

He Juye also pointed out that the "colored water" used in the test will not affect the structure of the roof, because the water depth is generally only 55mm to 75mm, and the maximum is only about 100mm, and the test is relatively short-term, generally taking 2 to 3 hours. Day, so it will not constitute a permanent impact, emphasizing "absolute safety".

Ho Kui-yip, the former president of the Institute of Surveyors, said that when a roof or platform is suspected of leaking, the "color water test" is used to check.

(File photo/Photo by Huang Shuhui)

Consumer Council|The quotation for decoration is ambiguous. Received more than 100 complaints in the first 10 months. I will teach you the audit report. The progress of the mandatory building inspection is 20 and a half years behind. How much is the residential inspection building?

The owner charges the management fee to solve the expensive canopy of the private building in Yau Ma Tei. The building inspector is fined 3,000 yuan for failing to supervise the maintenance properly.

Source: hk1

All news articles on 2022-04-26

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