Johnson Endura Industrial tiles are most suited for use over waterproofed terraces as they withstand all the Weathering effects roofs are exposed to and insulate against expansion and contraction of the Waterproofing layer below. Normally dust on the roof and movement of people leads to abrasion of the waterproofing layer. Johnson Endura tiles on a waterproofed roof help protect this surface. Care should be taken to test the waterproofing layer before tilling and tile joints should be sealed properly with epoxy or any other water-proof grouting material.