One of the most reliable ways to measure how effective a roof coating is at repelling heat is through its Total Solar Reflectance (TSR). Expressed as a percentage, TSR tells you how much of the sun’s total energy—including visible, ultraviolet, and especially infrared radiation—is reflected away from the surface.

???? The higher the TSR, the cooler your roof stays—and the less heat enters your building.

While weather conditions like cloud cover and wind can affect surface temperatures, coatings with high TSR values consistently outperform conventional paints in thermal protection.

NetZero UltraTherm Membrane uses advanced nanotechnology to enhance this reflectivity even further. Its film surface is engineered with nano-scale particles that cross-link tightly, boosting both heat-reflective power and self-cleaning properties—so dirt, dust, and pollutants don’t stick, maintaining peak performance over time.