My house is roughly 2 years old. I notice that when I step on some sections of the carpetted floor, it makes crackling noise - esp if I haven't setpped into a room in a while and if I walk through it now. The noise issue is more so during winter. I also hear pops sometimes behind walls and above ceilings. Should I be worried? or is it normal process of framings going through expansion contraction process.
thanks SS