Dry mounting A method of mounting drawings, photos, prints and other paper-based art on an acid-free cardboard backing. Instead of a paste or another moist adhesive, a thin sheet of dry-mounting tissue is sandwiched between the art and the backing. Then the three layers are heated up and kept under pressure. While the method is very lenient and goes a long way towards preserving the art, it is however not a method one would use for, say, valuable renaissance drawings. If in doubt, always consult an expert in the field of art conservation.