Q: I have dry rot underneath my vinyl floor, next to the shower in the bathroom. There is a “bubble” formed. What kind of repair is involved and what is the estimated cost? Also, is this a do-it-yourself project?

A: Yes, this is a nice and challenging DIY project. Here’s what you’ll need to do: tear out the vinyl flooring and the underlaying. You may also need to remove the shower. The rotted flooring needs to be replaced, and this entire process could cost anywhere between a few hundred to a couple of thousand dollars.