Window Permitting & Building Codes Made Simple: IRC, Egress & Safety Glass

## Navigating Fenestration Building Codes Compliance with the International Residential Code (IRC) protects your family during fire emergencies and ensures structural integrity during severe wind events. ### 1. IRC Section R310: Emergency Escape and Rescue Egress Every sleeping room must have at least one operable emergency escape opening meeting four strict dimensions: - Minimum net clear opening of **5.7 square feet** (5.0 sq ft at grade floor). - Minimum clear opening height of **24 inches**. - Minimum clear opening width of **20 inches**. - Maximum sill height of **44 inches** above the finished floor. ### 2. Tempered Glass Hazardous Locations (IRC R308) Tempered safety glass is legally mandated for any glass within 24 inches of a door, in shower surrounds, and within 36 inches of a stairway. Permit requirements vary by jurisdiction and project scope. Independent contractors should confirm which permits and inspections apply and explain their responsibilities before work begins. Call for an upfront **Fair Quote**.