Technical Bulletin 2, Flood Damage-Resistant Materials Requirements

Technical Bulletin 2 provides detailed guidance on the selection and use of flood damage-resistant materials for buildings located in Special Flood Hazard Areas (SFHAs) under the National Flood Insurance Program (NFIP). It explains material classifications, regulatory requirements, and the impact of material choices on flood insurance rates. The bulletin includes tables of acceptable and unacceptable materials, discusses their use in different flood zones, and addresses special cases such as accessory structures and wet floodproofing. It is intended for building professionals, code officials, and community officials involved in the design, review, and construction of buildings in flood-prone areas.