There's A Line Between A Good Shingle And A Great Shingle.?
And that line is the nailing line. The difference between a good shingle and a great shingle is having SureNail? Technology, only available from Owens Corning on Duration? Series Shingles. Patented SureNail? Technology features a wide, highly visible engineered fabric strip in the nailing area for a consistent, quality installation, and the unique product design provides outstanding gripping power.