Why Evidence Matters in Roof Rejuvenation
Asphalt shingles degrade through a well-understood process: UV radiation and thermal cycling oxidise the bitumen binder, causing it to harden, crack, and lose the plasticising oils that give shingles their flexibility and water-shedding ability. Granule loss accelerates as the binder weakens, and once granules are gone, the underlying mat is exposed to direct UV — the final stage before failure.
GoNano products interrupt this process by reintroducing bio-based oils and nano-silica particles that penetrate the shingle surface, restore flexibility, and form a hydrophobic barrier. The science behind this approach is documented in independent peer-reviewed research on nano-silica modified bitumen — the same material class used in GoNano formulations.
This page consolidates the technical evidence base: published research on nano-silica and bitumen, product specifications, warranty terms, environmental certifications, and the physical mechanism by which rejuvenation extends roof service life.
How Asphalt Shingles Age — and How Rejuvenation Works
Oxidative hardening
UV radiation and heat cause bitumen to oxidise. The aromatic oils that keep bitumen flexible evaporate or polymerise, leaving a progressively harder, more brittle binder. This is the root cause of shingle cracking and curling.
Granule loss
As the binder hardens, its grip on the embedded mineral granules weakens. Granules dislodge under rain impact and thermal stress. Granules are the primary UV shield for the underlying fibreglass mat — their loss accelerates degradation.
Mat exposure and failure
With granules gone, the fibreglass mat is exposed to direct UV. The mat degrades rapidly, shingles crack through, and water infiltration begins. At this stage, replacement is the only option.
GoNano rejuvenation
Applied during Phase 1 or early Phase 2, GoNano bio-based oils replenish the plasticisers lost to oxidation, restoring flexibility. Nano-silica particles fill micro-cracks and form a hydrophobic surface barrier. The result is a shingle that behaves measurably younger.
Published Research on Nano-Silica Modified Bitumen
The following studies are published in peer-reviewed journals and directly support the mechanism by which GoNano products extend asphalt shingle service life. Full PDFs are available in the documents section below.
Nano-silica and SBS modification of asphalt: self-healing properties
Key finding
Addition of nano-silica to SBS-modified asphalt significantly improved self-healing efficiency and fatigue resistance. Nano-silica particles fill micro-voids and restore cohesion in aged bitumen.
Relevance to GoNano
Directly supports the mechanism by which GoNano nano-silica particles restore structural integrity to aged asphalt shingles.
Influence of nano-silica on rheological properties and oxidative aging of polymer-modified bitumen
Key finding
Nano-silica addition reduced the rate of oxidative aging in polymer-modified bitumen, improving resistance to thermal cracking and extending service life projections.
Relevance to GoNano
Supports the anti-aging mechanism of GoNano formulations — nano-silica slows the oxidation cycle that causes shingle brittleness.
Effect of hydrophobic nano-silica on aggregate-bitumen interface bond strength in spring-thaw conditions
Key finding
Hydrophobic nano-silica treatment significantly improved aggregate-bitumen bond strength under freeze-thaw cycling, reducing moisture-induced damage — a critical factor in BC's climate.
Relevance to GoNano
Directly applicable to BC's wet climate: GoNano's hydrophobic nano-silica barrier reduces moisture infiltration and freeze-thaw damage in shingle granule bonds.
Effect of nano-silica particles on polypropylene polymer-modified asphalt mixture performance
Key finding
Nano-silica particles improved rutting resistance, fatigue life, and moisture susceptibility of polymer-modified asphalt. Optimal nano-silica content produced measurable improvements across all performance metrics.
Relevance to GoNano
Validates the performance improvement mechanism: nano-silica at optimal concentrations measurably improves asphalt material performance across multiple failure modes.
Evaluating the effect of hydrophobic nano-silica on viscoelasticity of asphalt and asphalt mixture
Key finding
Hydrophobic nano-silica improved the viscoelastic properties of aged asphalt, increasing elastic recovery and reducing permanent deformation — indicators of restored flexibility.
Relevance to GoNano
Supports the flexibility restoration claim: GoNano's nano-silica component measurably improves the elastic behaviour of aged bitumen, reducing cracking susceptibility.
GoNano Product Line — Technical Overview
All three GoNano products carry USDA BioPreferred® certification and are backed by written Canadian warranties. The table below summarises the key technical differentiators.
| Product | Warranty | Rate | Mechanism | Best for |
|---|---|---|---|---|
NuRoof Fortify™ Maximum protection | 15 years | $2.50/sq ft | Highest-concentration nano-silica and bio-based oil formulation. Maximum penetration depth and hydrophobic barrier strength. Designed for roofs showing moderate oxidation with significant remaining service life. | Roofs 8–15 years old with visible oxidation, minor granule loss, and no mat exposure. |
NuRoof Revive™ Most popular | 10 years | $2.10/sq ft | Balanced nano-silica and bio-based oil formulation. Full shingle penetration with decade-long hydrophobic protection. The most widely applied GoNano product in BC. | Roofs 5–12 years old in good structural condition seeking preventive life extension. |
GoNano BioBoost™ Eco-friendly entry | 5 years | $1.24/sq ft | Bio-based oil concentrate with nano-silica support. Rehydrates dried-out shingles and reduces granule loss. Entry-level rejuvenation for newer roofs or budget-conscious homeowners. | Roofs 3–8 years old showing early oxidation or as a maintenance treatment after prior rejuvenation. |
NuRoof Fortify™
15 yearsMechanism: Highest-concentration nano-silica and bio-based oil formulation. Maximum penetration depth and hydrophobic barrier strength. Designed for roofs showing moderate oxidation with significant remaining service life.
Best for: Roofs 8–15 years old with visible oxidation, minor granule loss, and no mat exposure.
NuRoof Revive™
10 yearsMechanism: Balanced nano-silica and bio-based oil formulation. Full shingle penetration with decade-long hydrophobic protection. The most widely applied GoNano product in BC.
Best for: Roofs 5–12 years old in good structural condition seeking preventive life extension.
GoNano BioBoost™
5 yearsMechanism: Bio-based oil concentrate with nano-silica support. Rehydrates dried-out shingles and reduces granule loss. Entry-level rejuvenation for newer roofs or budget-conscious homeowners.
Best for: Roofs 3–8 years old showing early oxidation or as a maintenance treatment after prior rejuvenation.
Certifications & Warranty
USDA Certified Bio-Based
United States Department of Agriculture
All GoNano products carry USDA BioPreferred® certification, confirming that the bio-based content meets federal standards. Bio-based products reduce dependence on petroleum-derived materials and have a lower lifecycle carbon footprint.
Canadian Warranty
NanoShieldBC
GoNano treatments applied by NanoShieldBC are backed by a written Canadian warranty covering the treated roof for the full warranty period. Warranty terms are documented and transferable to subsequent homeowners.
Research Papers & Technical Documents
Download the full PDFs of the peer-reviewed studies referenced above, plus GoNano warranty documentation and product data sheets.
All research papers are published in peer-reviewed academic journals. NanoShieldBC does not own copyright to the studies — they are referenced here for informational purposes. Warranty documentation is issued by NanoShieldBC.
Environmental Case for Rejuvenation Over Replacement
Asphalt shingle disposal is a significant and largely unaddressed environmental problem. Shingles are difficult to recycle — the fibreglass mat, mineral granules, and bitumen binder are bonded together in a way that makes separation economically impractical at scale. The result is that the vast majority of replaced shingles go directly to landfill. GoNano rejuvenation eliminates this waste stream entirely: no tear-off, no disposal, no new manufacturing. The environmental benefit compounds over the warranty period — a 15-year rejuvenation treatment defers one full replacement cycle, keeping approximately one tonne of material out of landfill.
Technical Questions
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