Independent laboratory results
Nine tests. Published in full.
Most roof treatments ask you to take their word for it. ShingleLock was tested by Certerra, an accredited independent laboratory, across nine separate measures — adhesion, strength, flexibility, emissions, fire and hail. Every result is below, including the methodology and the qualifiers.
- Tests
- 9
- Laboratory
- Certerra
- Report year
- 2025
- Warranty
- 6 years
- 01Granular adhesionGranules are the shingle's shield against UV and weather. Once they shed faster than the asphalt can hold them, the shingle wears out from the surface down.+56%Granule retentionon 30-year / end-of-life shingles
- 02Tear strengthWind, rain and hail all put the shingle mat under tension. A mat that tears lets water into the deck.+25%Tear resistance
- 03Flexibility & pliabilityCold makes asphalt brittle. A shingle that cannot flex cracks as the roof expands and contracts.+100%Pliability rating
- 04PCB leachatesRain runs off your roof and into the ground. What washes off it matters.BDLBelow detection limits
- 05EPA volatilesVolatile organic compounds affect air quality during application and afterwards.0.02%VOC emission
- 06Stiffness & flexibilityA shingle needs both: stiff enough to hold its shape in heat and wind, flexible enough not to crack in cold. Most treatments improve one at the expense of the other.+50% / +85%Flexibility and stiffness
- 07Colour changeFading tracks material degradation. Colour that holds indicates granules still doing their UV job.+50%Colour retention over time
- 08Flame resistanceHow fast fire travels across a roof surface decides whether a small fire stays small.+63%Flame-spread resistance
- 09Hail impact resistanceHail strips granules and cracks brittle shingles. Older roofs fail first.0%Granule loss at impact
All comparisons are against untreated shingles of the same age, measured by Certerra in 2025. Figures describe laboratory test performance. They are not a statement of warranty coverage — the Six-Year Limited Warranty covers material defects and shingle flexibility, and excludes hail, wind, fire and cosmetic change.