Highly reflective Rock-It Adhesive was used here as a cold applied aggregate surfacing adhesive with white marble aggregate embedded to ensure a strong, fully reflective surfacing. Bright white gravel surfacing combines the durability and weatherproofing aspects of gravel-surfaced roof systems with the benefits of a “Cool Roof” system, such as lower energy costs, reduced carbon output and less strain on a building’s HVAC system. By reducing the heat absorbed, equipment will work more efficiently cutting down on energy costs.