How does Roof Maxx work on asphalt shingles?

Roof Maxx uses soy methyl esters, a bio-oil compound, to replace the petroleum plasticizer oils that evaporate from asphalt shingles over time through UV exposure and oxidation. The treatment penetrates into the asphalt binder at a microscopic level and restores the oils that give shingles their flexibility. This process was developed and tested at The Ohio State University and is supported by ASTM-standard testing data.

What is in Roof Maxx?

The active component in Roof Maxx is soy methyl esters, derived from soybean oil. This bio-based compound has a molecular structure compatible with the petroleum plasticizer oils in asphalt shingles, allowing it to penetrate the shingle surface and integrate with the existing asphalt binder. It is non-toxic, biodegradable, and safe for application around people, pets, and landscaping.

Is there scientific evidence that Roof Maxx works?

Yes. Roof Maxx was developed through research at The Ohio State University and has been tested to ASTM D5997 and related standards for asphalt shingle performance. Independent testing has measured restored flexibility, reduced water absorption, and improved granule adhesion in treated shingles compared to untreated controls of the same age and condition.

How Roof Maxx Actually Works on Asphalt Shingles: The Science Behind the Treatment

Title: How Roof Maxx Actually Works on Asphalt Shingles: The Science Behind the Treatment

By Acadiana Roof Restoration LLC | Scott, LA | Veteran-Owned | Roof Maxx 5-Star Dealer

Skepticism about roof treatments is healthy. The roofing industry has a long history of products that overpromised. If you are asking for the actual science before letting anyone treat your roof, that is the right question.

Here is the technical explanation of how Roof Maxx works, where it was developed, and what the test data shows.

Start With How Asphalt Shingles Are Made

Asphalt shingles are a composite product. The base is typically a fiberglass mat. That mat is coated with asphalt, which is a petroleum byproduct. Mixed into that asphalt coating are plasticizer oils, also petroleum-derived, that give the asphalt its workability and flexibility at installation.

On top of the asphalt coating, ceramic or mineral granules are embedded to protect the asphalt from UV radiation and physical impact. The granules are the surface you see from the ground.

The asphalt binder layer is what matters for this discussion. It contains roughly 60 to 70 percent saturates and asphaltenes, which are the structural components, and a smaller percentage of plasticizer oils, which are the flexibility components. The ratio of those fractions determines how flexible or how brittle the shingle is at any given point in its life.

What Happens Over Time: Asphalt Aging

The process of asphalt shingle aging is well documented in materials science. The primary mechanism is oxidation, which is the chemical reaction between the asphalt components and atmospheric oxygen, accelerated by heat and UV radiation.

Over time, oxidation converts the lighter, more flexible aromatic and saturate fractions in the asphalt into heavier asphaltene fractions. The ratio shifts away from the components that provide flexibility and toward the components that create brittleness. Simultaneously, the volatile plasticizer oils evaporate from the surface, especially in high-heat, high-UV environments.

The result is a shingle that becomes progressively stiffer and more brittle over time. The rate of that change depends heavily on climate. In south Louisiana, the rate is faster than national averages because of our combination of high UV, sustained heat, and humidity-driven moisture cycling.

The Soy Methyl Ester Solution

Roof Maxx was developed through research at The Ohio State University, specifically through work on bio-based replacements for petroleum plasticizers in asphalt applications.

The active compound is soy methyl ester, which is derived from soybean oil through a transesterification process. Soy methyl ester has a molecular structure that is compatible with the petroleum plasticizer fractions in asphalt. When applied to the surface of an asphalt shingle, it penetrates through the granule matrix into the asphalt binder layer and integrates with the existing asphalt chemistry.

The penetration is not surface-level. The compound is formulated specifically to work at the microscopic scale of the asphalt binder and to remain in place within the binder structure over time rather than evaporating as surface coatings do.

The result is a measurable restoration of the aromatic fractions that provide flexibility. Third-party testing has shown treated shingles regaining up to 85 percent of their original flexibility compared to untreated shingles of the same age and condition.

The Testing Standards

Roof Maxx has been tested against relevant ASTM standards for asphalt shingle performance. ASTM D5997 covers test methods for asphalt-based roofing products. Performance metrics measured in testing include flexibility under cold-bend testing, water absorption, granule adhesion, and tensile properties.

Independent testing, meaning testing performed by labs that are not affiliated with Roof Maxx Industries, has confirmed the performance claims. This is the key distinction from generic competing products that rely on manufacturer claims without independent verification.

Why This Matters in South Louisiana Specifically

National testing data is useful. South Louisiana-specific deployment experience is more directly relevant to a homeowner in Lafayette or Baton Rouge.

We have applied Roof Maxx to hundreds of roofs in our climate over several years. We have seen the before-and-after condition on roofs across multiple parishes. We have reinspected treated roofs at the 2, 3, and 5 year marks. The treatment performs consistently when the roof was properly qualified for it at the time of application.

The qualifier matters. Roof Maxx works on shingles that still have structural integrity. It works at the point in a shingle's life when the oil depletion is the problem, not structural failure. For a properly qualified roof in south Louisiana's climate, the treatment delivers what the science says it should.

What About Safety?

Soy methyl ester is non-toxic, biodegradable, and USDA certified bio-based. It is safe for people, pets, and landscaping. It is not flammable at application concentrations. There is no special evacuation required during application and no curing period that restricts access to the home.

After application, the compound continues penetrating and integrating with the asphalt binder over several days. The surface appearance of the shingles changes slightly, generally appearing darker and more saturated in the days immediately after treatment, before settling to a normalized appearance.

See It for Yourself With a Free Inspection

We can show you what treated shingles look like on an actual roof, explain what we are looking for when qualifying a roof, and give you a straight read on whether your specific roof is a candidate.

Schedule your free inspection at aroofrestore.com or call 337-999-ROOF (337-999-7663).