I bought my house over a year ago and had the hardwood oak floors refinished. One of the bedrooms had water damage from a leaking roof (previous owners fixed this before I purchased the house) so they did not put poly on that floor and told me I should let it dry out before finishing it.
Long story short, there was a puddle of water in the crawlspace beneath this area which is why the subfloor was damp. I remedied all of this... no more puddles, no more soaked under-floor insulation, no more leaks. A year later and after trying multiple methods to dry it out, the hardwood floor was still wet so I finally decided to rip out parts of the floor.
Just as I suspected, the subfloor beneath still has a significant amount of moisture. The tar paper between the subfloor and hardwood was also damp.
Here is a picture of the affected area. You can pretty clearly see the color difference between the damp and dry areas. For the record, the damp areas don't FEEL considerably wet or anything, and there is 0 rot or mold:
Now that I'm at the subfloor, what can I do to finish drying this out so I can finally finish this darned bedroom!?