Tear strength
+25%
Tear resistance
Why it matters
Wind, rain and hail all put the shingle mat under tension. A mat that tears lets water into the deck.
What the test found
Treated shingles resisted tearing 25% better than untreated shingles of the same age.
Results
| Measure | Result vs untreated control |
|---|---|
| Same-age shingles | +25% |
Tested by Certerra, 2025, an accredited independent laboratory. Comparison is against untreated shingles of the same age.
Next testFlexibility & pliability+100%