How do you replace a subfloor?

Ron23899908
by Ron23899908

We just purchased a home and also just discovered the floor (appears to be chipboard) at the french doors is rotted and needs replaced. We've also discovered there's probably holes in the subfloor in other areas, because we sometimes step into a recessed area and already have some spots that are cracking from being walked on. (We've been in the home for less than a month.) The flooring that was applied to the subfloor is interlocking laminate (like linoleum) with adhesive backing.

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