Pinnacle® Impact shingles are manufactured with proprietary polymer modified asphalt technology allowing it to meet a UL 2218 Class 4 impact rating. With Pinnacle® Impact architectural shingles, that offer superior hail resistance, smog-reducing technology, and the algae-fighting power of 3M™ Scotchgard™ Protector, you’re investing in an exceptional performance roofing system with lasting curb appeal.