According to the The Common Code Violations Survey, published by NAHB and ICC in 2013 – these are the top 10 code violations found by US Code Inspectors:
- Missing Documentation – includes an engineer’s foundation letter, the structural plans, the truss drawings, the plan for the HVAC ductwork and gas piping, and the energy code documentations.
- Improperly Placed Anchor Bolts – the 2015 IRC now requires the anchor bolts to be placed in the middle third of the width of a foundation plate.
- Braced Wall Errors – Code requires nailing along all panel edges, and that may require blocking between studs on tall walls or when panels are run horizontally.
- Weakened Joists and Beams – Inspectors see a lot of beams that aren’t sized for the load or that lack proper bearing.
- Deck Ledgers and Braces – includes hangers that were too small for the joists, improper fastening, and inadequate flashing that set the ledger up for rot.
- Stair Rise/Run Errors –
- Stair Handrails and Guardrails – By code, they must be a minimum of 34 inches, and no more than 38 inches high.
- Missing or Inadequate Fire Blocking – Fire blocking must cut off the concealed draft openings between all vertical and horizontal cavities
- Air-Barrier Gaps – Pay extra attention around HVAC chases and attic knee walls for air barrier gaps that need to be sealed.
- Exposed Kraft-Faced Insulation –
- Top Ten Code Violations (JLC) – http://www.jlconline.com/how-to/top-ten-code-violations_o
- COMMON CODE VIOLATIONS SURVEY (February 2013 full report – PDF) – https://www.nahb.org/en/research/legal-issues/~/media/9F94F33B9BF34372B77747022B311013.ashx