天气冷,湿度高 you have already answered your own question. It is a common phenomenon. 6 x( b a8 P0 r* [Ask your builder, they will tell you what exactly run above and make that sound.
4 S# b1 y# H8 G# Z9 T2 d7 JWe have 类似水滴的声音 from the beginning and been this house for 3 years. * N+ v. q. z+ x* BNobody tells us what exactly that is. A city guy can't tell us anything about that. 3 ~( H- \8 U8 Q6 P# s1 D) W& R6 L" C" I2 O
The house is good so far, so we just leave it alone.