rot

I am the proud new owner of a '73 Ericson 27. Of course there is a rather lengthy list of upgrades, repairs and general maintenance needed. First on my list is probably the most involved project needed on the boat. The deck floor in the cockpit area - from the collar area around the tiller...

So I recently bought an E27 that needs quite a bit of work. The worst of it is the Compression Post and aft most bulk head. The one between the head and salon that's attached to the Compression Post. The bottom of the Compression Post has become soft from sitting in water. There are a few leaks...

I've found a couple of spots with soft wood that I assume are from dry rot. Other than tearing out the soft wood and replacing it, what should I do to treat the surrounding areas to prevent spread ? The ports are now all replaced so the cause for the moisture should be taken care of. What...