5 Common Building Code ViolationsUpdated: Mar. 21, 2022
Check your home for these potentially hazardous situations
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Building codes go a long way to assuring you that you live in a safe house. But unless you check, you never actually know whether parts of your home need upgrading to meet the current code. This is especially true when you move into a new home.
Some common, and potentially dangerous, building code violations are hard to locate and even harder to fix because they’re buried behind finished walls. These include improper framing, excessively cut and notched studs and joists, and inadequate connections between building materials. However, the following common violations are easy to find.
Missing or Defective GFCIs
Ground-fault circuit interrupter (GFCI) protection is now required for outlets in the kitchen, bathroom and garage and for all outdoor circuits. It cuts power to a circuit if it detects a current change, protecting against electrical shocks. Test for the presence of GFCIs by plugging a GFCI receptacle tester into an outlet in each of these areas (photo “violation” below). It’ll detect whether there’s a GFCI on the circuit and other wiring problems, such as reverse polarity and open grounds.
Test for Missing or Defective GFCIs
A GFCI tester detects a bad GFCI as well as other wiring problems.
Watch this video to learn about the most common electrical mistakes so you don’t make them:
Handrails Without Returns
Codes require handrails to have “returns,” meaning they need to turn and end at the wall (photo “Solution” below). Returns keep items such as sleeves and purse straps from getting caught on the end of the rails and causing a fall. Handrails need to be placed 34 to 38 in. above the nose of the stair treads and must be 1-1/4 to 2-5/8 in. thick.
Handrail Violation and Solution
Stairways are high accident areas. Up-to-code handrails are important for safety.
Improper Bathroom Venting
Bathroom exhaust fans should vent to the outside—either through the roof or the side of the house—not into the attic (photo “violation” below). Stick your head into the attic to see how yours is vented. Venting the warm, moist air into the attic can cause rotting in the roof framing and sheathing, and may not properly rid the bathroom of moisture, leading to mold and mildew.
Bathroom Venting Violation and Solution
Venting to the attic dumps a lot of moisture into that space. In cold weather the moisture will condense on the underside of the roof and potentially cause rot.
Missing Deck Flashing
Flashing needs to be installed between the deck ledger board and the house, and the ledger needs to be firmly attached (photo “solution” below). A building inspector we talked to said incorrectly installed ledgers are the main cause of problems in do-it-yourself decks because the ledger may pull loose from the house. These decks can actually collapse, especially when loaded with people.
No Deck Flashing and Proper Deck Flashing
The deck/house joint is a common place for rot. Not only will the rot weaken your deck. It’ll also weaken structural members in your home, which will require an expensive repair.
Misplaced Smoke Alarms
Codes require a smoke alarm on each level of the house and outside each bedroom (photo “solution” below). Codes require new homes to have a smoke alarm in each bedroom, hard-wired with a battery backup and interconnected so if one activates, they all go off. Ceiling-mounted alarms should be installed at least 4 in. away from walls, and wall-mounted alarms 4 to 12 in. down from the ceiling.
Correctly Position Your Smoke Alarms
Smoke alarms are critical life-saving devices in case of fire. Position them according to directions.
Required Tools for this Project
Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.
- 4-in-1 screwdriver
- Adjustable wrench
- Brad nail gun
- Drill bit set
- Drill/driver - cordless
- Miter saw
- Non-contact voltage tester
- Pry bar
- Socket/ratchet set
- Tin snips
- Utility knife
- Wire stripper/cutter
Required Materials for this Project
Avoid last-minute shopping trips by having all your materials ready ahead of time. Here’s a list.
- Metal flashing
- New GFCI
- Roof vent
- Wood glue