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Jurisdiction-specific code packets, storm reports, and compliance documents — generated in 60 seconds from any US ZIP code.

Generate

Storm Reports
Code Packet
Photo Packet
Material Calculators
Upload Documents
Measurement Import

Storm Data

Hail Map
Storm Archive
Storm Alerts
Wind History

Reference

Code Search
Citation Pack
Check Permits
Building Departments
States Directory
Compare States
Building Codes

Company

About
Why cite.codes
Privacy Policy
Terms of Service
Contact
Help Center
Brand Guidelines

All Calculators

Valley Metal Calculator

Calculate valley metal flashing for roof valley intersections per IRC R905.2.8.2

Measurements

Enter valley dimensions

Total Valley Length

All valley lines combined

Valley Type

Scope Type

Waste Factor5%

NoneStandardComplex

Code Reference

Valley Diagram

Enter valley lengths to calculate metal flashing requirements

PDF includes: calculation inputs, material quantities, applicable code references, and computation trace