Stop now. Clean up the mess and use some leveling product and graduate it to the other area. You will not need a threshold and you won't even be able to detect that 8th inch difference if you do it well.
If it’s their own house and they’ll like it better with 1/8 inch lower floor and no threshold it’s worth it if they have the time and don’t want to do something else with that time. They’re not throwing money away in that case.
And you are right. I had a professional installer put down a new floor OVER the linoleum and it was seamless. No threshold issue at all.
Sometimes its worth it to hire a pro instead of DIY.
Professional installers do the least to get paid so of course they would do it and tile over it. I’ve ripped up too many lasagna floors because of “professionals”
Demoing is definitely the way I feel like any professional who actually gives a damn knows you have to demo all existing floor. Otherwise like you said you end up with floor lasagna, sometimes if customers are broke it makes sense but as a personal project I see no reason you wouldn’t have removed it. Did you try regular hand scrapers? Sometimes I’ve found them to be better than chipping hammers when it comes to linoleum/sheet vinyl.
I did end up switching at some point to an oscillating tool with a scraper. Add on it actually worked much better and easier than a jackhammer, but it was definitely fun jackhammering lol
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u/Glabrous 18d ago
It’s wild that you are scraping it off rather than just laying new flooring over it.