YOU CAN MEET EVERY GUARD RULE AND STILL FAIL Deck guard post attachment under the IRC is often misunderstood in the field. If the walking surface is more than 30 inches above grade, a guard is required. The code establishes the dimensional requirements—height and opening limitations. Those are the visible parts of the code. But … Read more
Why This Matters in the Field Deck lateral load connection requirements under IRC R507.9.2 are one of the most commonly misunderstood inspection items in the field. Most installers focus on the ledger attachment and assume that once it is properly fastened, the structural connection to the house is complete. The IRC does not treat it … Read more
Stair riser height and tread depth are the most common reasons stairs fail inspection in residential construction. They fail because the stair layout is wrong. Under the International Residential Code (IRC), which applies to one- and two-family dwellings and townhouses, stair requirements are prescriptive and strictly enforced. And most of the time, failure comes down … Read more
The Governing IRC Sections This article breaks down handrail graspability requirements IRC and explains what fails inspection in the field. Note: Height, projection, and wall clearance are separate handrail compliance checks under R311.7.8.1 through R311.7.8.3. and not covered in this post. These requirements are all driven by the IRC (2018, 2021, and 2024—no meaningful change … Read more
“What is the required bolt spacing for a deck ledger?” Is one of the most common questions inspectors hear on deck framing inspections involves deck ledger bolt spacing requirements under the IRC. Under the International Residential Code (IRC), there is no single universal spacing rule. Ledger fastener spacing is determined by a prescriptive table in … Read more
Deck ledger flashing requirements are critical because moisture intrusion at the ledger connection can damage the band joist and structural framing. The deck ledger connections get a lot of attention for structural fastening, but inspectors also look closely at water management at the ledger-to-wall interface. The International Residential Code addresses this directly because moisture intrusion … Read more
Understanding the IRC Structural Connection Requirement A deck ledger attached to brick veneer is a condition that frequently fails inspection. The IRC deck ledger provisions assume the ledger connects directly to structural framing, typically the band joist, not exterior cladding systems such as brick veneer. It looks secure. The bolts are tight. The ledger is … Read more
EVSE GFCI requirements NEC 2020 and 2023 can look confusing at first — not because the code is unclear, but because multiple sections may apply depending on connection type and location. I introduced this reasoning method in an earlier post, but here we’re going to slow it down and apply it directly to EV charging … Read more
How Professionals Determine NEC Applicability in the Field starts with establishing whether a rule is even triggered before debating what it requires. I’ve seen experienced electricians, contractors, and inspectors look at the same installation and reach different conclusions—not because the language was unclear, but because the reasoning process was inconsistent. The National Electrical Code establishes … Read more
Subpanel bonding” (NEC 2023) still often gets written up. Not because it’s complicated — but because the line between service equipment bonding and load-side bonding gets crossed. The NEC draws that line very clearly. Inspectors enforce it the same way. Start With the Real Distinction “Subpanel” isn’t defined in the NEC. What we’re talking about … Read more
