Abstract: Method and apparatus for interior decorating an extended-area surface in which a lightweight non-fabric sheet stock is permanently preprinted and sealed on its entire outwardly-disposed surface, and coated on its inwardly-disposed surface with a dry prepaste capable of being activated by moistening with water. Hand-torn pieces are wetted and applied with ragged hand-torn edges overlapping which, as dried, are seam-free to sight or touch. Wall papering can be carried out without matching patterns or concern with plumb lines.