墙的另一面是shower box,可能以前防水做的不好以至于检查时这面墙的Moisture reading很高,墙皮也有些翘起来了。找了水管工来检测,他的报告上写的是I ran the shower for around 15min spraying the hose in all the locations that generally leak in showers. After 15min there was no sign of water outside the shower or on the carpet outside the room. In my opinion the mark on the bedroom wall is from a previous leak that has been repaired.