INTRODUCTION

Granular adhesion measures the strength of the bond between the asphalt mat and the protective surface granules, which shield the shingle from harmful UV radiation and weathering. Strong granular adhesion is critical for extending the life of the shingle because when granules wear off too quickly, it can lead to premature aging, increased leaks, and vulnerability to weather-related damage. 

CONCLUSION

For Fresh Roof, the results of the granular adhesion test show impressive improvements in the retention of granules compared to untreated shingles of the same age. The following performance enhancements have been observed:

25% - Better Adhesion for New Shingles

40% - Better Adhesion for Shingles Aged 15 Years

50% - Better Adhesion for Shingles Aged 30 Years or Nearing Their End of Life

These results highlight Fresh Roof’s superior ability to retain granules over time, compared to a controlled untreated shingle, leading to prolonged durability and better overall protection. This improvement in granular adhesion means less wear, reduced risk of damage, and a longer-lasting roof with fewer maintenance concerns.