天气冷,湿度高 you have already answered your own question. It is a common phenomenon. - q/ J. {5 C, P, uAsk your builder, they will tell you what exactly run above and make that sound.
5 W$ a% A, K+ n, eWe have 类似水滴的声音 from the beginning and been this house for 3 years. $ e5 c0 H0 G/ R
Nobody tells us what exactly that is. A city guy can't tell us anything about that.' o7 o8 V0 O" Q6 l) r3 S( t
. V. F5 v( j- g- H1 DThe house is good so far, so we just leave it alone.