Nicolock Nicostone THMTRBL1448 14" x 48" Bluestone Thermal Tread Paver. Thermal Finish Treads are an effective way to transform patio steps, pool decks and other level changes around your home. We’ve given these treads a smooth thermal finish surface and a flamed stone edge treatment on the three outer sides We blend the color pigments all the way through the stone so the color will last for generations. Add steps and landings anywhere on your hardscape using thermal or fullnose treads. They can be used with most wall stones made by Nicolock Paving Stones. If you have an elevated outdoor dining area, Thermal Finish treads are a great coping solution that will complement your look.