Drip Edge Flashing Along Rake and Eave Edges

According to the International Residential Code (IRC), all eaves and rake edges need flashing. These prevent rainwater from wicking into the roof sheathing or decking as it leaves the roof covering. The profile of this flashing ensures that any drips from the edge fall away from the sheathing of the roof deck (the structure supporting the roof covering). It is for this reason that edge flashing is also commonly referred to as drip edges or drip flashing. A drip edge flashing should be installed at the eaves and rake edges of shingle roofs (eaves: along the gutter; rake: along the gable edge). Adjacent segments should overlap. The drip edge flashing should extend at least 1/4-inch below the roof sheathing and extend backward up onto the roof deck at least 2 inches. The drip edge flashing should be fastened to the roof deck at every 12 inches, maximum.