Add Material Layer
R-value: 5 per inch
Wall Assembly (Exterior → Interior)
1. Vinyl/Aluminum Siding
R-0.60
Cross-Section ViewExt → Int
R-0.60
Total R-Value
Code Tier
✗ VIOLATION
Required: R-20
Short by R-19.40
Compliance Status
Zone 5A (Massachusetts)
Base code typically requires R-20 cavity or R-13+5ci. Stretch code adds continuous insulation requirements.