Vapor Retarder Slab Code: Complete 10 Mil Rule & Sealing Tips

If you’re pouring a concrete slab under a conditioned space, the vapor retarder beneath slab code requirements in the 2021 IRC mandate a vapor barrier—and not just any plastic sheet. The 2021 IRC made an important change: under Section R506.2.3, the minimum vapor retarder thickness was increased from 6 mils to 10 mils. Why the … Read more

International Residential Stair Code Guide: How to Pass Your Inspection

Understanding the International Residential Stair Code Guide can make passing your stairway inspection a whole lot easier. Whether you’re a contractor, a DIYer, or an inspector preparing for final sign-off, knowing the key IRC stair code requirements up front will save you headaches—and red tags. This guide breaks it down clearly so you can build … Read more

How to Pass Your AC Inspection: Avoid These Common NEC Violations

Want to pass your AC inspection the first time? Understanding the NEC and IRC code requirements is the key to avoiding red tags and failed installs. If you’re prepping for an air conditioning (AC) inspection—whether you’re the electrician, HVAC installer, or inspector—understanding the NEC requirements is key to passing on the first try. This guide … Read more