The Science & Lab Testing That Show Why Roof Rejuvenation Is Better Than Roof Replacement

Test & Evaluation Report - Screening Evaluation of Shingle Rejuvenator - By PRI Asphalt Technologies, Inc

Background:

Rejuvenators have 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 the Greener Shingles roof treatment.

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 (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 in 2 vs. the untreated shingles exhibiting a 144 in2 spread. Greener Shingles rejuvenator proved 40% better flame resistance vs untreated shingles, this was unexpected.

Discussion:

These screening evaluations strongly suggest the Greener Shingles Roof Treatment provides benefits to key performance properties of asphalt shingles associated with durability and possible extended life cycles.