Hi, Wanted to jazz up this old basement bathroom that has old tile from "who knows when" in this 1971 built house. I think the tile that's down is vinyl or something, but it's old fashioned. I bought this "cheap" 89c tile that I like at HD. Any tips for putting this stuff down. Just clean the old floor good and dry, etc? Is peel and stick ok? I might have about 4x4 bathroom space to do and that's it. The 89cent tile is below.

I bought a home with a basement that is "finished" but really nothing is as we want it down there. It has a gross carpet which I imagine is sitting directly on the concrete. I am looking at vinyl planks as the likely candidate to make this area feel more like a room to spent time in rather just store stuff. I'm trying to make sure I understand the layers of what I need to put underneath the vinyl. So my understanding is that I would do the following: 1. Lay landscaping Fabric (or some other similar barrier) directly on the concrete 2. Put down insulating plastic subfloor 3. This is were I am getting confused, it seems people recommend OSB as the next layer ("underlayment"). Is that required for all types of floors or only specific types? I found a product (link below), which says it can be used for laminate and engineered hardwood, so I'm not sure if it also could apply to vinyl? Would that be in lieu of OSB? or another layer. [url]https://www.homedepot.ca/en/home/p.367-ft-x-273-ft-premium-felt-cushion-underlayment-roll.1000753691.html?eid=PS_GOOGLE_HD+%7C+E-Comm_E-Comm+%7C+Shopping+%7C+Floors_Floors_pla-349578933544&gclid=Cj0KCQjw5LbWBRDCARIsALAbcOeWHuuiN4CLEvGwshOTCZHoVD6uLLzSmA099csD0CgalCAidL3Dt2caAjl3EALw_wcB[/url] Not looking to cheap out, just trying to understand every layer that would be required for this project before getting started. I'm mostly curious whether or not I need the OSB, but aside from that I guess I'm interested in making sure I have all of the layers correct.