Any damaged or rotten beams won’t support your home for long. So if floor joists have to be replaced, you’re looking at a ballpark cost of $2,000 or more per joist, and $5,000 or more for the main beam. How much you’ll spend depends on the type of material. If there’s structural damage, access is going to be limited, and this may, in turn, increase the cost of cleaning.
Beam and Joist Replacement
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