Each roll measures approximately 26"w x 11'h and covers approximately 24'sq. of wall space. Rolls may be cut to size using an Exacto knife. To calculate the number of rolls you need: 1) Measure the height and the width of your space in inches; 2) Multiply the two numbers; 3) Divide the sum by 144; 4) Divide by coverage per roll (i.e. number of square feet covered per roll); 5) Multiply by 1.15 (to ensure sufficient supply for pattern alignment and potential mistakes); 6) Round up to the full roll. Can be applied over drywall, paint, paneling and to a wall previously covered with wallpaper (with adhesive removed). INSTALLATION Loosely roll the wallpaper with the printed side facing in. Completely submerge the rolled wallpaper in water (in a wallpaper tray) for 10 to 15 seconds to activate the adhesive. Slowly remove the roll by pulling the leading edge out of the tray, glue-side up. “Book” the wallpaper by laying it on the floor glue-side up; starting from the short ends of the wallpaper, fold either half of the glue side against itself for approximately 1 minute (avoid creasing). Unfold one half of the wallpaper, leaving the other half booked, and position the glue-exposed portion of the wallpaper on the wall. Once satisfied with the positioning, unfold the other half of the wallpaper to expose the remaining glue surface, and adhere to the wall. Working downward and outward, use a damp sponge to smooth and remove any excess glue. Tip: Do not over smooth. Bubbles smaller than the size of a quarter will dissipate as the wallpaper covering sets.