Frequently Asked Questions

Yes. Roof Rejuvenate USA commissioned an independent 3rd-party study through PRI Asphalt Technologies, a recognized authority in asphalt shingle testing. The study used 15-year-old shingles from a real residential roof and ran a 1,500-hour accelerated weathering test simulating 5 years of natural aging. Treated shingles significantly outperformed untreated shingles across every metric tested: 53% better granule adhesion, 66.7% improvement in flexibility, and 24% higher tear strength. The product is also USDA BioPreferred certified with 95% bio-based content and no added PFAS.

Yes. The treatment is backed by independent testing and a USDA Certified Biobased designation. It restores the natural oils asphalt shingles lose over time — the primary cause of cracking, curling, and granule loss. Thousands of roofs have been successfully treated nationwide.

The product is manufactured by Colorbiotics, a global leader in construction materials. It’s made from fermented corn sugars — not vegetable oil or soy methyl esters. It’s 96% plant-based, USDA Certified Biobased, and has been 3rd-party lab tested for flexibility, granule adhesion, fire retardancy, and weathering after 5 years in asphalt shingles.

No — that’s a common misconception. Roof Rejuvenate is made from fermented corn sugars, not vegetable or cooking oil. It’s SME-free (no soy methyl esters), plant-safe, and formulated specifically for asphalt shingles. It works by penetrating the shingle at the molecular level and replenishing the oils that have evaporated due to UV exposure — not by coating the surface.

The plant-based oil soaks into each shingle and replaces the natural oils lost through years of sun and heat exposure. This restores flexibility (preventing cracking and curling), improves granule adhesion (reducing granule loss in gutters), slows UV degradation, and inhibits moss and algae growth. Your roof will also look noticeably darker and newer — similar to how it looked when new.

Yes. Your shingles will darken immediately after application — similar to how they looked when new. This darkening dissipates over a few days as the oils absorb into the lower shingle layers. The result is a roof that looks noticeably cleaner and healthier. Over the following years, the surface will gradually lighten as the top layer oxidizes — at which point a second application can be done.

Yes. The treatment improves shingle condition and makes the surface less hospitable to moss and algae growth. It’s not a direct moss or algae remover, but by restoring the shingle’s natural oils, it reduces the conditions that allow organic growth to thrive.

Soft washing uses sodium hypochlorite (bleach) to remove organic stains like algae and moss — it’s a cosmetic treatment. Roof rejuvenation restores the structural health of the shingle by replenishing essential oils, preventing cracking, curling, and granule loss. One improves appearance short-term; the other extends your roof’s functional life. Harsh chemicals like sodium hypochlorite can actually accelerate shingle degradation over time.

Not necessarily. Our rejuvenator penetrates the shingle surface and targets live organic growth directly, eliminating it even in the lower shingle tabs. We’ll assess your roof during the free inspection and advise on whether any prep work is needed before application.

Most residential roofs are completed in under 2 hours. You don’t need to be home. There’s no tear-off, no dumpster, and no crew on your property for days.

No. Roof Rejuvenate is a professional-grade product available only through authorized dealers. Proper application requires specific equipment and training to ensure even coverage and correct absorption. It also requires a roof inspection to confirm your shingles are good candidates before any product is applied.

Shingles typically start showing signs of aging between 5 and 10 years — granule loss, minor cracking, slight curling at the edges. These are signs that the shingle is drying out, not failing. Rejuvenation is most effective at this stage. Shingles that are severely curled, structurally damaged, or have lost most of their granules may no longer qualify.

The treatment works on asphalt shingles that still have granules intact. Roofs with severe structural damage, missing shingles, or complete granule loss may not qualify. We assess every roof honestly during a free inspection and will tell you upfront if yours doesn’t qualify.

Not necessarily. Age alone doesn’t disqualify a roof. What matters is the condition of the shingles — specifically whether granules are still present and the shingles retain some structural integrity. We’ve successfully treated roofs that are 20+ years old. The only way to know for sure is a free inspection.

Often, yes. Many homeowners who are told they need a new roof actually have shingles that are dry and brittle — not structurally failed. Roof rejuvenation restores flexibility and granule adhesion, which is what shingles need to keep protecting your home. If your roof genuinely needs replacement, we’ll tell you that honestly.

Roof rejuvenation is a smart move before solar installation. By extending shingle life by 5+ years, you ensure the roof can support a solar array without needing replacement mid-installation. Most reputable solar companies won’t install on a failing roof — rejuvenation gives you more options and a longer runway.

For most roofs over 10 years old, shingle manufacturer warranties hold little practical value. Most manufacturers stop covering labor after 10 years, meaning a defective materials claim typically results in only a prorated percentage of material costs — leaving the most expensive part (labor) uncovered. Our product penetrates the shingle to restore what’s been lost — it’s not a coating or sealant that forms an external barrier.

Most standard residential roofs in the 2,000 sq ft range run approximately $3,000 — compared to $20,000–$35,000 or more for a full roof replacement. Final price depends on your roof’s size, pitch, and condition. We provide a free, no-obligation estimate after inspection.

If your roof qualifies, yes — it’s one of the most cost-effective home maintenance investments available. You’re extending the life of an existing asset for roughly 10% of what a replacement would cost. The 5-year transferable warranty, potential insurance benefits, and improved curb appeal add further value.

The price includes the free inspection, the full treatment application, and the 5-year transferable warranty. There are no hidden fees and no upsells. If your roof doesn’t qualify, the inspection costs you nothing.

In most cases, no — and some insurers view a properly maintained, treated roof favorably. We recommend checking with your carrier. The USDA Certified Biobased designation and your 5-year transferable warranty are documents you can share with your insurer.

Possibly. Some of our customers have successfully used the treatment — along with the certification and warranty documents it produces — to satisfy their insurer’s requirements without a full replacement. We can’t guarantee your insurer will accept it, but it’s worth exploring before committing to a $25,000+ job.

No — roof rejuvenation is maintenance, not an insurance claim. Insurance covers your roof against covered perils like wind and hail, not routine upkeep. What we provide is a maintenance treatment that keeps your roof in better condition for inspections and renewals. We also provide before/after photos and a condition report you can share with your carrier.

Yes. Roof Rejuvenate East Bay (Greener Roofing Solutions CA LLC) is an authorized licensee of Roof Rejuvenate USA, operating under an exclusive territory covering Contra Costa County. We are not a franchise — we operate independently under our own business while using the Roof Rejuvenate USA product, training, and standards. You can verify authorized dealers at roofrejuvenateusa.com.

The warranty covers the treated shingles against new cracking and loss of flexibility. If either occurs within 5 years of treatment, we return and reapply at no charge to you.

Yes. The 5-year warranty is fully transferable to the new homeowner, which can be a meaningful selling point when you list your property.

The treatment can extend shingle life by up to 15 years depending on the age and condition of your roof at the time of application. Every treatment is backed by a 5-year transferable warranty. After several years, as the surface oils oxidize off, the treatment can be reapplied for continued protection.

We serve Contra Costa County including Walnut Creek, Lafayette, Danville, Alamo, Pleasant Hill, San Ramon, Concord, and Orinda. Not sure if we cover your area? Call us at 925-899-6383.