ROCKCOTE Trowel On is a flexible acrylic based coating that uses pebbles to create a unique patterned finish. ROCKCOTE Trowel On is normally finished in a traditional travertine style (vertical strike lines), but can also be swirl finished. ROCKCOTE Trowel On is available in 1.5mm and 2mm. ROCKCOTE Trowel On is recommended to be over coated with ROCKCOTE Armour or Armour Flex.