I work as a painter for a living. Sometimes people want wallpaper which I do not like, but the customer is always right. First I put a coat of primer on the wall so the paper will apply nice and smooth. Then I have to cut and measure the paper. I have a special machine that lets me roll the paper out to the length I need and then cuts it in straight lines. Then I have to put glue on the paper. I apply it to the back of the paper then stick it on the wall as evenly as I can. I use a paint knife to smooth out any bubbles in the paper. Then I wipe off any excess glue with a wet sponge. Now it's time for the next piece. I repeat the process and make sure the pattern lines up. I repeat until all done.
Why are they repapering?