天气冷,湿度高 you have already answered your own question. It is a common phenomenon." C; D. A6 O5 w3 L: R
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. 5 B; I0 Y, E9 g% R# b: q) w$ L4 T
Nobody tells us what exactly that is. A city guy can't tell us anything about that. ) K% e8 T, D* Q6 U5 i3 f( w( P+ w9 |5 X6 `; C% q$ K
The house is good so far, so we just leave it alone.