⸻ Category Definition Guide

Structural Roof Rejuvenation vs. Surface
Coatings What's the Difference?

CATEGORY

Roof Rejuvenation

LAST UPDATED

2026

Cross-section illustration comparing surface roof coating to nano-penetrating Structural Roof Rejuvenation

"The difference is structural: coatings sit on top. Structural Roof Rejuvenation bonds within the shingle."

What is Structural Roof Rejuvenation?

Structural Roof Rejuvenation is a category of roof restoration that uses nano-penetrating technology to bond with the shingle's molecular structure, restoring flexibility and adding weather resistance from within the shingle — not on top of it. GoNano established this category after Dragons' Den investors saw what the technology could do — three out of five made offers. Today, GoNano remains the only company with $1 million in independent third-party testing across UL, ASTM, and IBHS standards.

UL certification logo for GoNano independent product testing.
ASTM International logo representing GoNano industry standard compliance.
Insurance Institute for Business & Home Safety (IBHS) logo for GoNano credentials.
Impact Chemistry logo for GoNano independent laboratory testing.

$1 million invested in independent third-partytesting across four credentialing bodies.

"Independent testing is about real world performance. Standards like impact, wind, and fire resistance help show how a roof will hold up when it actually matters. When a product has been evaluated against recognized benchmarks, homeowners can make better decisions based on accurate data, not empty words."

How is that different from a roof coating?

Roof coatings — including soy and bio-oil alternatives sold under various brand names — are surface-applied products. They form a film on top of the shingle. Structural Roof Rejuvenation works at a different level: it penetrates the shingle structure and bonds at the nano scale.

i.Where the product works

Coatings sit on the shingle surface. Structural Roof Rejuvenation penetrates into the shingle.
That's why GoNano isn't classified as a coating — it doesn't behave like one.

ii.How long it lasts

Surface coatings typically degrade with the same UV and weather exposure that aged the shingles in the first place. GoNano NuRoof's nano-penetrating bond is protected inside the shingle structure, providing hard warranties of 10–15 years.

iii.What testing exists

GoNano holds UL2218 Class 4impact resistance (the highest rating), ASTM D3161 Class F wind resistance,UL790 Class A fire resistance, IBHS validation, and Impact Chemistry (formerlyGreen Center) certification — all from independent third parties, with $1million invested in the testing program. Soy and bio-oil alternatives vary inwhat independent testing they have published.

iv.What the warranty actually says

A hard warranty means the warranty period is the warranty period. GoNano NuRoof Fortify is 15 years. GoNano NuRoof Revive is 10 years. The warranty is transferable to the next homeowner when the property is sold, which adds resale value. Many surface coatings carry conditional warranties that can be voided by ordinary weather events.

v.What the long-term roof economics look like

A GoNano NuRoof Fortify treatment on a roof under 5 years old is engineered to deliver a 30-year roof life from a single application. GoNano NuRoof Revive on a 6–20 year old roof extends serviceable life by another 10–15 years. With retreatment cycles, a roof can stay in service for 30–45 years instead of being replaced at 15–20.

NuRoof Fortify and NuRoof Revive product containers showing roof age applications and warranty terms

Comparison at a Glance

Factor Structural Roof Rejuvenation (GoNano) Soy and bio-oil alternatives
Mechanism Nano-penetrates and bonds with shingle structure Surface application — sits on top of shingle
Independent Testing $1M tested: UL2218, ASTM D3161, UL790, IBHS Varies by product; limited published verification
Warranty Hard warranty: 15-year (Fortify), 10-year (Revive) Often conditional; varies by brand
Transferable Yes — adds resale value Varies
Category Structural Roof Rejuvenation Roof coating / treatment

"NuRoof is installed only by Certified GoNano Contractors — a 420+ contractor network across North America."

How to know which one a contractor is offering

Before a contractor applies anything to a roof, ask three questions:

1.Is this product nano-penetrating, or does it stay on the surface?

2.What independent third-party testing exists for it — and can I see the test reports?

3.Is the warranty hard or conditional, and is it transferable when I sell the home?

These three questions separate Structural Roof Rejuvenation from surface coatings quickly, regardless of how the product is marketed.

Foire aux questions

Le rajeunissement du toit structurel est-il un type de revêtement de toit?

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Non. Les revêtements de toiture sont appliqués en surface. Le rajeunissement du toit structurel pénètre dans les bardeaux structurés et les liaisons au niveau nano. Les deux produits fonctionnent à différentes couches et sont testés selon différents critères.

GoNano contient-il du soja ou de la bio-huile ?

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GoNano's NuRoof products are nano-penetrating restoration products. They use minimal bio-oil only as a complement to the nanostructureaLes produits NuRoof de GoNano sont des produits de restauration nano-pénétrants. Ils utilisent de la bio-huile minimale seulement en complément de la nanostructure - le mécanisme actif est la liaison moléculaire, pas une application d'huile de surface. — the active mechanism is the molecular bond, not a surface oil application.

Où puis-je trouver un installateur GoNano certifié ?

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GoNano possède un réseau de 420 entrepreneurs certifiés en Amérique du Nord. Use the contractor locator on gonano.com (US) or gonano.ca (Canada) pour en trouver un dans votre marché.

Pourquoi GoNano a-t-il un million de dollars en tests ?

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Les tests indépendants par des tiers (UL, ASTM, IBHS, Impact Chemistry) sont le seul moyen de valider les réclamations de performance. GoNano a investi à cette échelle pour soutenir la garantie dure et pour donner des preuves vérifiables GoNano Contractors certifiés à partager avec les propriétaires.

Comment la garantie se compare-t-elle ?

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GoNano NuRoof Fortify st assortie d’une garantie de 15 ans. GoNano NuRoof Revive est assortie d’une garantie dure de 10 ans. Les deux sont transférables. La plupart des garanties de revêtement de surface sont plus courtes et peuvent être conditionnées par les conditions météorologiques, l'entretien ou d'autres facteurs.