US Patent 10273682 Fire protection retrofits for high-rise buildings

Buildings, particularly high-rise buildings, are retrofitted with a fire resistant liquid-applied material, preferably a material that intumesces with heat, where the exterior of the building is formed of metal clad combustible foam composite panels. Once the fire resistant coating has been applied, new thin panels matching the original fascia are installed outside the original composite panels, with space between, so that the appearance of the building is maintained.