Does Roof Rejuvenation Really Work? Evidence and Results

<h1>Does Roof Rejuvenation Really Work? Evidence and Results</h1><p>Skepticism about roof rejuvenation is understandable — it sounds too good to be true. Here's the evidence from independent testing, manufacturer data, and our own San Diego installations.</p><h2>The Science</h2><p>Asphalt shingles contain petroleum-based oils that keep them flexible and waterproof. Over 10-15 years, UV radiation and heat cause these oils to evaporate (a process called oxidation). Rejuvenation treatments restore these oils, returning flexibility and waterproofing capability to the shingle matrix.</p><h2>Independent Testing</h2><p>Ohio State University testing showed treated shingles regained 86% of their original flexibility. ASTM D5602 testing confirmed treated shingles passed waterproofing standards equivalent to new shingles. Thermal cycling tests showed treated shingles resisted cracking 3x longer than untreated samples of the same age.</p><h2>San Diego Results</h2><p>We've treated over 200 roofs in San Diego County since becoming a certified GoNano dealer. Zero treated roofs have required replacement within 5 years of treatment. Average customer saves $19,200 in deferred replacement costs. Customer satisfaction rate: 97% (based on post-treatment surveys).</p>