天气冷,湿度高 you have already answered your own question. It is a common phenomenon.& A$ |' n8 Q( J6 l
Ask 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. : M- u `3 i% N; KNobody tells us what exactly that is. A city guy can't tell us anything about that. 0 ~) N) Z4 o: ?) v e2 M8 Z1 L, i& S* u% x0 s) T5 J
The house is good so far, so we just leave it alone.