What is the minimum acceptable temperature for the storage of flooring and installation materials?

Store all materials in a dry area out of direct sunlight, rolled face out on a core and standing upright. If it becomes necessary, the rolls may be stored on end in an unheated warehouse at temperatures between 30°F (-1°C) and 85°F (29°C) as long as they are protected from the weather, the area is dry and out of direct sunlight, and free of internal combustion (exposure to exhaust from gas or oil combustion in the form oxides of nitrogen can lead to warehouse yellowing especially in residential flooring). Allow all flooring materials and adhesives to condition to the room temperature before starting the installation. Materials must be stored indoors in a heated space protected from the weather and maintained at a minimum temperature of 65°F (18°C) and a maximum temperature of 100°F (38°C) for at least 48 hours before installation.