HomeMy WebLinkAboutfema_tb_2_rev1 18, 6.8.2016 Technical BulleTin 2 – auGuST 2008
bring such buildings into compliance is not triggered (called “substantial improvement”). Fig-
ure 4 illustrates some suggested retrofitting of interior walls in a pre-FIRM building. However,
please note that the techniques illustrated in Figure 4 cannot be used to bring a substantially
damaged or substantially improved building into compliance with the NFIP. For additional in-
formation on wet floodproofing, see Technical Bulletin 7, Wet Floodproofing Requirements.
Buildings Outside of SFHAs
FEMA reports that up to 25 percent of NFIP flood insurance claims are paid on buildings that
are outside of the mapped SFHA. This occurs for many reasons, including out-of-date maps
and local drainage problems. In areas known to be prone to flooding that are not subject to
the NFIP requirements, it is recommended that flood damage-resistant materials be used for
construction of new buildings and for repair or renovation of existing buildings. Figure 4 il-
lustrates some options.
Figure 4. Partial wet floodproofing technique using flood damage-resistant materials for finished wall
construction.