Thermoplastic is a homogeneous dry mixture of resin, pigment, glass beads, and filler. When heated, the mixture moves into a liquid state and is applied either by spray or extruded on the road ranging from 90 to 120 mils depending on the specification. When applied, thermoplastics cure through the release of heat and return once again to solid form. Thermoplastics must be applied at temperatures of 50 F and rising, plus no moisture for 24 hours, which decreases the application window. Another version of thermoplastics, called Preformed, is provided in premade (preformed) symbols and shapes and used typically for intersection markings. In the case of preformed, the material is placed on the surface, then heated by a handheld propane torch to wet out into the surface, then cure as heat is released.