September 2, 2025 · by Jasmine Millard
Acrylic coatings are cheaper per gallon and breathable. Silicone is pricier, but ponding-water rated and far less sensitive to UV breakdown. In Utah's high-altitude sun and snow-load cycles, the math almost always tips toward silicone.
Our default recommendation is GacoFlex S20 silicone for any flat roof where ponding can occur, and Henry 587 acrylic for steeper low-slope residential roofs with strong drainage.