When I remodel my basement bathroom and remove the old vinyl sheet flooring, I realized the current one was on top of another old one. And between the two sheet flooring layers, there is a thin layer of paper/glue that is 1/16" thick.
Starting from bottom up in the picture:
1 is concrete
2 is old vinyl
3 is some weird paper+glue layer
4 is the topmost vinyl
I was able to remove all
4 layer and some
3 layer but most left there on top of the concrete:
I took me an hour just to pry off the small portion you see on the right side in above photo.
Should I just put thinset and then tile on top of what it is now? Basically forget about removing the current
3layer? They stick very good and I would say it is adding 1/16" - 1/8" in some spot. This option saves the most time but I don't know if I get good result. I plan to sell the house in a year or two so I may not concern about 5-10 years later.
Should I install hardie backer board on the floor? I would think it may be unnecessary as it's already concrete.
Should I pour some self leveling cement? I saw this a lot on TV but never done.
Should I just spend 8 hours to scrape off the rest? Or is there a faster way, with probably some heat gun and large putty knife??
I am leaning toward Option 1 above right now.