The IRC ensures projects are structurally sound and safe. Failure to comply with them can result in costly, time-consuming re-work or legal troubles.

Avoid these common code violations when building decks:

• Not having proper on-center spacing for stair stringers (requirements can vary by decking product)
• Failing to install a code-compliant rise and run for stairs (make sure the angle is within the specs!)
• Not installing continuous graspable handrail when required
• Using the improper type or amount of ledger connections to the house
• Not installing products according to the manufacturer’s requirements
• Not following the approved plan’s specifications

When in doubt about the requirements, consult the most recent IRC code book.