I recently had a home inspection and there was some concern about potential damage in the subfloor. The inspector wasn't too worried, but I noticed that a few small pieces of wood literally crumbled when touched. I'm wondering if this is indicative of dry rot, and if so, how much dry rot would be considered excessive? Should I be planning for a full subfloor replacement? Also, does any of this look like termite damage?
3 Answers
From what you've described and shown, it doesn't look like termites to me. It really seems like the wood has been affected by long-term water exposure, leading to some rot and possibly mold. It's better to address it sooner rather than later to prevent further damage.
I think it’s smart to plan on replacing your subfloor and maybe even some joists. Given the age of the construction, it might be a bigger issue than just surface rot. Ensure you poke around to check for soft spots — if it feels solid generally, that could be a good sign.
You might want to replace those wooden supports with metal ones for added strength; it's a cheaper fix. Also, definitely ask your inspector to note any areas of softness in their report. And don't hesitate to consult a general contractor — they can give you a solid opinion on whether further repairs are necessary or if a structural engineer needs to step in.
Good advice! Getting a contractor’s opinion can save you a lot of headaches later on. They can give you a better idea of what repairs are essential.

Totally agree! Checking for soft spots is super important. If it feels solid, that's reassuring, but you'll want to keep a close watch on it.