Having stripped a lot of vinyl and woodchip wallpaper over the last two years, I will offer the following advice.
– Turn the steamer on early, with the head in a buckt, so it can be getting the room steamy
– Score the flip out of, using something like this:
– Score it some more, and then a bit more
– Steam the flip out of it first: Start at the top, hold the steamer head in place for a good twenty seconds, then move it across, another twenty, move it across again, another twenty. Move it down a ‘row’ and repeat. keep going to the bottom of that roll of paper.
– Steam the flip out of it again: Another 3*20 second bursts on the top row, by then you should be able to get the scraper behind. Then move down, row buy row, and with look you can take the sheet off in one, scraping behind it as it peels down the wall.
You will sweat your man boobs off. However, keep windows and doors shut; the steamier the room, the easier the job.