Cool roof coatings work by reflecting solar radiation rather than absorbing it. A layer of dust, pollen, or biological growth reduces that reflectivity, meaning a dirty cool roof gradually loses some of its cooling benefit.
The Right Cleaning Method Matters
High-pressure washing can strip or damage the elastomeric coating that gives cool roofs their reflective properties. Soft washing with appropriate low-pressure application removes dust and biological growth without compromising the coating.
Recommended Schedule
Most DFW cool roofs benefit from a cleaning every 2–3 years, though homes with heavy tree coverage or visible staining may benefit from more frequent attention.
Frequently Asked Questions
Yes, high-pressure washing can strip or thin elastomeric cool roof coatings. Soft washing is the appropriate method.
The exact amount varies by coating and dirt level, but visibly dulled or dirty coatings measurably reduce reflectivity compared to a clean, well-maintained surface.
Yes, our soft wash roof cleaning process is appropriate for cool roof coatings as well as standard shingle roofs. Call (214) 307-2127 for an assessment.
Ready for Professional Service?
Blues Home Services serves Southlake, Frisco, Flower Mound, Colleyville & the Dallas-Fort Worth area.
