A roof receives intense solar exposure during a North Carolina summer. Roofing color, coating, ventilation, insulation, attic conditions, tree coverage, and home design all influence how much of that heat reaches the living space.
Reflectivity and heat release
Many coated metal-roofing products are designed to reflect a portion of solar energy and release absorbed heat efficiently. This can help reduce roof-surface and attic heat compared with some darker, heat-absorbing materials.
The roof is one part of the system
No responsible contractor should promise one universal energy-savings percentage. Actual performance depends on insulation, air sealing, ductwork, ventilation, HVAC efficiency, thermostat settings, and local weather.
Questions to ask
Review the coating, available colors, ventilation plan, underlayment, installation method, and relevant product ratings.