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Using the width of your border as a guide, prime the wall or surface area where you plan to install your border. Plan your starting point so that if there is a mismatched seam, it'll fall in an inconspicuous place. If you're going to be hanging a border as a chair rail, use a level and draw a light pencil line around the room at the right height.
Dip your border in warm water for 30 seconds (Image 1), one length at a time. Then carefully remove it from the water and press it on to the wall. Use a dry cloth to press the border into place and wipe away the excess water (Image 2).
Begin by hanging your first strip at a corner, and overlap the border onto the adjacent wall about 1/4 inch. Have a helper hold the border while you hang it and smooth it with the smoothing brush.
If a seam falls in the middle of a wall, overlap the border strips so that the patterns match, then cut through both layers with a utility knife. Remove the cut ends, and then press the border flat with the smoothing brush.