60% of detached houses built over 30 years old have stains...There are also hidden leaks that you may not have noticed.

Roughly speaking Sakura Office has released data on the risk of rain leaks from approximately 1,000 used homes. It is said that more than 60% of single-family homes built over 31 years old have evidence of rain leaks. During the rainy season, it is strictly prohibited to close the air supply vents or shut down the internal cleanliness of the air conditioner. Read article