Most coating budgets get spent on walls, but walls shed water and the roof takes everything else. Here is what a commercial roof coating actually does, how acrylic and silicone systems differ, why prep work decides whether any of it lasts, and when coating stops being the right call for a San Antonio building.

The air conditioner runs from sunrise past sunset, the electric bill creeps higher every cycle, and the house never quite feels as cool as the thermostat claims it should. Most people respond by servicing the AC or adding attic insulation, and both are worthwhile steps. But the roof itself, the single largest surface exposed to direct sun for hours every day, rarely gets a second look until something starts leaking. That's the part most people miss. On a typical triple-digit