I'm going to be flooring the kitchen in a few months, using foot-square ceramic tiles. The subfloor is plywood. I have two questions.
Although the subfloor is plywood, right now there is a layer of vinyl all over the kitchen, area-glued. This stuff was all over the house. For example, it was in the main bath, and took hours to scrape it out. In one hallway, I peeled up the vinyl and just left the paper backing (since I was going to lay wood over it anyway). I mean this stuff is a pain to get up, and I don't relish the idea of scraping it up from the kitchen, with something like 400 square feet to do. Can I leave that vinyl, or at least the paper backing, glued to the subfloor?
I once saw a method for laying tile that involved putting down a layer of thinset, then a layer of these foam squares that had a waffle texture, then another layer of thinset, then the tiles. The purpose was to provide more give for the tiles, so that there would be no cracks over time. Does this method work? Anyone know where to get the waffle foam?
Thanks for your help.