Eterna-Kote S-100 Silicone Plus Roof Coating is a 100 percent white silicone coating that provides the ultimate durability and longevity to your roof surface. This product has the highest degree of waterproofing protection and provides superior protection to the underlying roof surfaces. It is ideally suited for flat roofs that have a tendency to pond water, as well as on installations that require the best waterproofing coating available. The bright white finish keeps roofs cool, which in turn can help lower cooling costs. In hot or cold climates, this coating forms a seamless layer of waterproofing coating that will stretch to prevent cracking and peeling. This is our best liquid waterproofing coating.