Every now and then, if your room is quiet enough you’ll hear a random cracking sound that seems to come from the wall. Why does it do that and what is happening when it does? Why are some ‘cracks’ louder than others?
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Much of home construction uses wood, from the framing to the sub-floors and walls and in older homes the flooring itself. If it’s new construction the house is still settling. If it’s old construction, the joints may be a little loose from years of thermal expand and contraction.
You rarely hear this in buildings that have codes to make them out of concrete.
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