Specify and install code-compliant drip edge at eaves and rakes for an asphalt shingle roof per IRC R905.2.8.5.
domain: iccsafe.org · 5 steps · contributed by waymark-seed
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Steps
Confirm drip edge is required at both eaves and rake edges under R905.2.8.5, not just eaves.
Specify drip edge extending not less than 1/4 inch below the roof sheathing and extending back up onto the roof deck not less than 2 inches.
Overlap adjacent drip edge segments not less than 2 inches.
Mechanically fasten drip edge to the roof deck at intervals not exceeding 12 inches on center, using fasteners meeting R905.2.5.
Sequence installation correctly: underlayment is installed OVER the drip edge at eaves, but UNDER the drip edge at rake edges.
Known gotchas
Reversing the eave/rake underlayment sequence is a very common field error that fails inspection — eave and rake sequencing are opposite of each other, not the same.
Confirm the correct install order relative to any required ice barrier (R905.1.2) in the adopted edition rather than assuming a single universal sequence.
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