Mortarless tile installation system and method for installing tiles

A method of molding a thermoplastic sheet, the method comprising the steps of:

• molding a thermoplastic sheet to provide indentations in a preferred shape to form a mold;
• coating the mold with a temporary pressure sensitive adhesive;
• depositing a permanent adhesive into the mold to leave a thin layer of the permanent adhesive on the top of the adhesive sheet;
• sticking the thin permanent adhesive layer to the tile back to adhere the adhesive sheet to the tile;
• applying the tile to a substrate;
• separating the thermoplastic mold from the adhesive at the temporary pressure sensitive adhesive layer;
• pressing the tile onto the substrate to permanently affix the tile.

An installation system for installing architectural covering material to a substrate surface, comprising:

• a release sheet and a plurality of discrete adhesive substrate portions positioned on the release sheet;
• wherein each discrete adhesive substrate portion comprises an adhesive material having a shell layer and an adhesive core layer, wherein the shell layer is rupturable to facilitate adhesion;
• wherein the core layer of the discrete adhesive contains a permanent adhesive and is applied via rupturing of the shell layer;
• and
• wherein the shell layer is a non-adhesive layer;
• wherein the release sheet has a top side surface and a bottom side surface, and wherein the top side surface has a stronger bonding affinity with the discrete adhesive substrate portions than the bottom side surface, wherein the bottom side surface is releasable from the discrete adhesive substrate when in contact therewith.