b'KNOWYOUR SHINGLE.WHEN IT MATTERS The Goal of a Larger Nailing Areais for Nails to Penetrate BOTH Shingle Layers.Some shingles claim a larger nailing area by widening the nailing lines on the top of the shingle, without also extending the bottom of the shingle which completely missing the pointliterally.Malarkey Larger Nailing Area(Wide Lines, Long Backing)Side ViewCompetitor Larger Nailing Area of Shingles(Wide Lines, Short Backing)Nail Hits Within Wider Narrow Nailing Lines Lines But Still Misses Back Layer. Wider Nailing Lines'