Roof Rejuvenation Guide

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.