We tore up our carpet and padding, and in looking under the big cold air return grate, I noticed that we have two floors; not just 2 hardwood floors, I'm talking hardwood, then the wood subfloor, then joists, then under THAT is another "subfloor," or what is the ceiling in the basement, then more joists under that.
My vote is to sand and refinish the existing floor, but we may be getting brand new hardwood, which I believe means I need to tear up the old hardwood floor. I just wanted to see if anyone knows why I have these two complete floors, and if there's anything I need to be concerned about or be cautious of when potentially ripping up the old floor.
I have PICTURES and questions that relate to them. If the URL's below aren't links you can click on, just copy/paste the URL into your browser.
Now here's the view from the basement steps, looking back up towards the top; it shows the level of the floor upstairs, and then the joists that you can see in the basement (you can see from the distance between upstairs' floor and the ceiling joists in the basement that the basement joists are not the same ones seen through the cold air return upstairs):
So, to sum up:
1) Why do I see diagonal subfloor pieces that stop and are replaced with straight-running subfloor pieces upstairs? And does this add serious complications to the idea of tearing up the top hardwood floor?2) Why do I have a "double" floor, like a set of two complete floor assemblies (subfloor and joists on top of subfloor and joists)?
3) Does anything described and seen in the pics mean that I'm in for a world of hurt in terms of tearing up hardwood and putting in new?Thanks, everyone, for reading, for your input and thoughts, advice, cautions, etc.
Complete Newb