Flame resistance
+63%
Flame-spread resistance
Why it matters
How fast fire travels across a roof surface decides whether a small fire stays small.
What the test found
Treated shingles showed 63% better resistance to flame spread than untreated shingles.
Results
| Measure | Result vs untreated control |
|---|---|
| Same-age shingles | +63% |
Tested by Certerra, 2025, an accredited independent laboratory. Comparison is against untreated shingles of the same age.
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