Department of Homeland Security Seal Federal Emergency Management Agency University of New Orleans Logo
 
 
Protecting Your Home > Wet Floodproofing

Wet Floodproofing allows water to enter the house, however everything that could be damaged by a flood is elevated above the flood level.

  • This approach is appropriate for garages and raised basement homes.

A typical raised basement house

Structural components below the flood level are replaced with materials that are not subject to water damage.

  • Concrete block walls are used instead of wooden studs and gypsum wallboard.
  • The furnace and water heater are permanently relocated to a higher floor.
  • Where the flooding is not deep, these appliances can be raised on blocks or platforms.


Wet floodproofing has one advantage over the other approaches: no matter how little is done, flood damage is reduced. Thousands of dollars in damage can be prevented by simply moving furniture and electrical appliances to a higher level.

The major disadvantage of wet floodproofing is that there are restrictions on the use of the space below the flood protection level.

  • The area can still be used; there should be no carpeting, furniture, insulation, and other materials subject to water damage that cannot be removed in time.
  • This may not be a problem where the basement homes have flooded before and the owners have opted to not refinish them.
  • Can be combined with dry floodproofing - dry floodproof the house and the walls separating the garage from the house and then wet floodproof the garage.

For more information, see: