Can these tiles be used outdoors? Will they hold up in hot and cold weather and sunshine? They are for the floor of a polyethylene telescope building.

Our 1/2" Rubber Gym Tiles can be installed outdoors. These tiles are very durable and will be able to withstand the elements. They are freeze/thaw stable and are mold and mildew resistant. These tiles are very slip-resistant and are more slip-resistant when wet. The only thing that you will notice when placing our rubber flooring outside is that it can fade in direct sunlight over time.