I was wondering if someone can tell me why my walls creak and make loud snapping or popping sounds at different times of the day or night. Not every day or night but just at different times. I have a vent free gas stove that i sometimes use instead of my electric baseboard and it definitly happens more when i use the stove and not long after i fire it up,, maybe 10 or 15 minutes after. PLEASE ADVISE. THANK YOU