The floor area can be especially sensitive to temperature changes, whether they take place quickly, over a long period, or at an excessively high or low temperature. A floor finish can be cracked rapidly by thermal shock, for example when a steam cleaner touches the floor at 120°C or when a cold storage unit blasts air at -25°C.
A thick polyurethane finish provides an efficient barrier against the majority of extreme temperatures, providing high thermal shock resistance.
Its temperature resistance also ensures that the floor will not fail under thermal cycling of gradually rising or falling temperatures over time. The thermal expansion coefficient of polyurethane is similar to that of concrete, which means the finish will expand and contract in the same manner as the substrate.