天气冷,湿度高 you have already answered your own question. It is a common phenomenon. ; Y$ x' q" K. @. XAsk your builder, they will tell you what exactly run above and make that sound.
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We have 类似水滴的声音 from the beginning and been this house for 3 years. 0 N' z& }( h1 l% [
Nobody tells us what exactly that is. A city guy can't tell us anything about that.# O) f3 S9 C2 m4 @ r
$ X" T: \& v, W8 N; mThe house is good so far, so we just leave it alone.