The technique of folding wallpaper and allowing time for the adhesive to penetrate without drying out so that the paper expands. The time period varies with different types of wallpaper. To book wallpaper, fold it pasted side to pasted side, with the edges of the strip in alignment and the ends overlapping about 1/2 inch approximately midway down the strip.
it is necessary to book most wallcoverings after pasting unpasted product or wetting prepasted patterns. It allows the wallcovering to relax, which helps to prevent stretching and shrinking that can cause seams to show. To book a strip of wallcovering is to lay a pasted or a wet prepasted strip of wallcovering paste side up on a table or work surface. Fold the top half of the strip to the middle of the sheet, (paste to paste) and fold the bottom of the sheet to the middle (paste to paste) being careful not to crease the edges. Leave it to rest for the recommended amount of time (usually about 3 minutes). Then the strip is ready to hang.
A term used to describe how wallpaper is folded after it is either pasted or pulled through a water tray. Generally the top of the wallpaper is LOOSELY folded (not creased) shorter on the top and longer on the bottom end and allowed to book (relax) per manufacturers recommendation (generally 5 to 10 minutes.)