Roof rejuvenation guide
When it helps, when it doesn’t, and what testing evaluated.
Roof rejuvenation guide
Roof rejuvenation is an asphalt shingle treatment intended to help restore flexibility in aging shingles and improve performance characteristics — especially for roofs that are drying out but not yet failing structurally. The key is eligibility: rejuvenation is not a fix for a roof with widespread failure.
When rejuvenation can make sense
- Asphalt shingles are aging (often ~10–18 years) and showing dryness/brittleness
- No widespread active leaks
- No major decking problems
- You want a cost-effective way to extend service life
When rejuvenation is not appropriate
- Severe shingle loss or cracking through the mat
- Structural issues (soft decking, sagging)
- Multiple active leaks across the roof
What independent testing evaluated
An independent Intertek report evaluated shingles treated with a rejuvenation product versus untreated shingles using ASTM E96 (water vapor transmission), ASTM D3462 §8.1.7 (pliability), and ASTM D3462 §8.1.9 / ASTM D4977 (displaced granules / granule adhesion). In the report’s conclusion, treated shingles met the specified pliability and displaced-granule performance requirements, while untreated 15-year-old shingles did not meet the displaced-granule requirement.
Testing reflects the samples and standard methods used; your roof’s eligibility depends on its condition and installation details.