BACKGROUND: 

​Rejuvenator has a long history of limited use in the asphalt roofing industry. Initial use was limited to conventional hot-mopped built-up-roofs. Over the years, there have been attempts to restore/maintain rejuvenated asphalt shingle roofs. 

In the most recent times, asphalt rejuvenation has gained national focus in the paving industry. In response to the enhanced focus, a number of new technologies have been introduced. Some of these products are advancing the rejuvenation/restoration technologies and are hypothesized to exhibit efficacy in the asphalt roofing industry. 

OBJECTIVE: 

​Perform and assess selected screening evaluation to provide insight on Bio-Based Roof Shingle Treatment System. 

CONCLUSIONS: 

​Based on a Spray Application Rate of 1 gal/125 ft.2, followed by a five (5) day ‘cure’ period on aged shingles provided. 

1. Flexibility 23°C was improved (from a Failure to pass). 

2. Granular Adhesion was improved significantly from a granular loss of 1.11 g to a loss after treatment of 0.15 g, an 86% improvement. 

3. Hail Impact was slightly improved after treatment. The improvement 6.6%, was minimized by the type of shingle evaluated – organic felt based. The data suggests Hail Impact would have a greater improvement on FG mat-based shingles. 

4. Fire Resistance ‘UL Speed of Flame:’ The treated shingles exhibited a flame spread of 86 in2 vs. the untreated shingles exhibiting a 144 in2 spread. 60% better than the untreated shingles, this was unexpected. 

​*Full report available upon request.