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Greener Shingles Rejuvenator (GSR) works by restoring and preserving the essential oils within your asphalt shingles. Over time, these shingles tend to lose their natural oils, causing the granular coating to wash into the gutters and leaving the shingles susceptible to cracking and deterioration. The GSR product contains specialized compounds that penetrate the shingle's surface, replenishing the lost oils and rejuvenating its structural integrity. By doing so, it reinforces the shingles' ability to hold onto granules, thus enhancing their resilience and longevity. With each application of GSR, you can expect to add an impressive five years to the lifespan of your roof shingles. 


Asphalt roofs typically exhibit signs of aging after 8-10 years, which can vary based on region and environmental conditions. As the essential oils dry up, the shingle's granular coating begins to wash into the gutters, resulting in a loss of its ability to hold the granular in place. This exposes the shingle to potential cracking and failure.

The idea for Greener Shingles Rejuvenator was sparked by a patented asphalt rejuvenator that has been utilized for over a decade to protect the oil in roads, driveways, and parking lots. To make this technology suitable for asphalt roofing shingles, the bio-based asphalt rejuvenator was redeveloped and is now exclusively available through authorized dealers to ensure optimal application of the rejuvenator 

PRI Asphalt Testing has been at the forefront of asphalt quality assessment since 2018, conducting ongoing laboratory testing of the Greener Shingles Rejuvenator (GSR) product. It is important to note that PRI Asphalt Testing operates as an independent, highly respected testing facility in the country and is not affiliated with GSR or any other product manufacturers. Their dedication to impartiality and rigorous testing procedures has earned them top honors in the industry. Over the years, they have consistently evaluated the performance and efficacy of the GSR product, providing valuable insights into its effectiveness in preserving asphalt shingles and prolonging their lifespan. PRI Asphalt Testing's commitment to delivering accurate and unbiased results underscores their reputation as a trusted authority in the field of asphalt testing and research.


Below are the latest findings from the "Shingle Rejuvenation Benchmark Life-Cycle Study" conducted by PRI Asphalt Technologies. This comprehensive study aims to provide valuable insights into the performance of shingles treated with Greener Shingles Rejuvenator, comparing them to the closest competition and untreated shingles over extended periods of 3,000 hours. These timeframes represent the equivalent of 10 years of simulated exposure using the Asphalt Pavement Weathering System (APWS).

Lab Testing

The results of the study have yielded exceptionally positive outcomes for our product when compared to both the closest competitor and untreated shingles.

These findings underscore the exceptional quality and effectiveness of Greener Shingles Rejuvenator as a shingle rejuvenation solution. It not only outperforms our closest competition but also provides significant advantages over untreated shingles.


To our knowledge, there is no shingle rejuvenation product available in the market that has undergone as comprehensive and rigorous testing as GSR. These extensive tests and outstanding results provide an invaluable selling point for our dealers to communicate with their customers. These tests demonstrate our commitment to our dealers ensuring that our shingle rejuvenator stands out as the most reliable and superior choice for preserving the longevity and integrity of their customer's shingles.

Click here to download the full report

Initial Lab Testing and Research

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PRI is a national and global leader in materials testing and performance. PRI provides accredited, independent, third-party testing, evaluation, and technical services to the Asphalt/Bitumen, Building Materials, Chemical, Construction/Infrastructure, and Energy Markets.

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 evaluations to provide insight on the Greener Shingles roof treatment.

  1. Aged Asphalt Shingles 3-Tab Organic Felt Based Rejuvenator  Roof Shingle Treatment

    OBJECTIVE: Perform and assess selected screening evaluation to provide insight on Greener Shingles 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.

    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. 

  2. Flexibility, 23°C was improved (Failure to pass).

  3. 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.

  4. 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.

  5. 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.

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Additional Testing

In addition to our third-party lab testing, Greener Shingles Rejvueantor has been conducting in-house field tests with the product in different conditions across North America. This specific continual moss removal test was started in May 2019 and continues into 2023. 

The goal is to see what additional benefits the Greener Shingles Rejuvenator product offers. Our dealers have reported moss and algae clearing from rejuvenated roofs without traditional soft wash cleaning beforehand.


Although we still recommend traditional cleaning for immediate curb appeal, homeowners are seeing black streaking fading days to weeks after rejuvenation with the Greener Shingles Rejuvenator product.  

Moss Removal

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Ongoing Cedar Shakes Testing

At present, we do not offer a guarantee for rejuvenating cedar shake shingles but our continual real-world testing has proven moss/algae removal and a cleaner look. We'll update this gallery as we continue to monitor these tests.

Extreme Example

Although we don't recommend rejuvenating shingles that are in this bad of shape, this (above) evidence does show how well the Greener Shingles Rejuvenator works. When applied to dried-out, brittle shingles that have curled up because of a lack of oil, the Greener Shingles Rejuvenator penetrates to the lower tab of the shingle, and the shingles laid back down flat. The color change is quite drastic in this example but shows how dried out the shingles were before the application. Now that the shingles once again have oil in them, the shingles will be able to withstand expansion and contracting and help to keep the remaining granule in place, effectively buying this homeowner sometime before total replacement. 


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Greener Shingles Rejuvenator, your eco-conscious solution to roofing! Our product is proudly USDA Certified as a 90% bio-based product. But the "green" in our name isn't just about us; it's about the alarming truth that approximately 11 million tons of asphalt shingles end up in landfills annually, contributing to the hazardous waste dilemma our planet faces. Shingle rejuvenation, made possible by our product, significantly extends the lifespan of asphalt shingles, ensuring they remain atop roofs and far from the perils of landfills for an extended period. By reducing the need for these non-recyclable materials, we're actively contributing to a healthier environment. Choose this soy oil based Greener Shingles Rejuvenator and join us in the mission to combat harmful landfill waste.

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