To promote even adhesion, some wallpapers need time before being hung to absorb the paste, or “relax.” To allow for this, use a technique called “booking”:
1) Fold the bottom third of the strip over the middle.
2) Then fold over the remaining portion until it slightly overlaps the end of the first portion. Take care to align the edges, and do not crease it. (If the strip is untrimmed, cut it at this point with a razor or utility knife along the trim marks.)
3) After waiting the time recommended by the manufacturer—usually 5 to 15 minutes— loosely roll the strip to prepare it for hanging and enclose it in a large plastic bag so it can relax without drying out.

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