DIAMONDCLEAR TPS Protectant & Restorative is a revolutionary coating designed to protect pool tile and PebbleTec. This product employs an unique silicon chemistry to protect pool, spa and hot tub waterlines from damage caused by calcium and scale buildup, dirt, body, and suntan lotion oils. TPS utilizes a pure silicone polymer that when applied rapidly cures to a transparent barrier between corrosive pool water and tile/PebbleTec. Water can"t penetrate, therefore scale and mineral buildup is prevented. DIAMONDCLEAR TPS is designed to protect tile and PebbleTec finishes from the harmful effects of water.This product must ship via UPS. The posted price already includes the additional $10 in shipping needed for UPS.