Wear a respirator or a facemask rated for black mold spore protection, and cover arms, legs and hands to avoid contact with mold spores. Use soap and a sponge to remove visible mold. If the moldy area is dry, lightly spray with water, as this will reduce the incidence of airborne mold spores during cleaning. Next, use commercial black mold removal products, which can be found in most hardware or home repair stores, to disinfect the moldy areas, in addition to any adjacent areas. If you use bleach, make sure it won't discolor the material or surface. Place all sponges, equipment and other materials used in cleaning in a heavy duty garbage bag, and if possible, remove the bag through an nearby exit as opposed to the main house, to avoid distributing mold spores.
The methods for dealing with damage to walls depend on the type of materials and also what’s behind those materials. Drywall can often be salvaged, when you respond quickly to damage. You can purchase moisture meters that allow you to assess structural integrity. If the integrity checks out then your drying approach will depend on wall contents. If the wall has insulation, you will need to use flood cuts. If there is no insulation, then usually the best method is to create weep holes. And if you’re dealing with a firewall, you’ll want to use staggered cuts.
In the United States, those individuals who are affected by widescale flooding may have the ability to apply for government and FEMA grants through the Individual Assistance program. On a larger level, businesses, cities, and communities can apply to the FEMA Public Assistance program for funds to assist after a large flood. For example, the city of Fond du Lac Wisconsin received $1.2 million FEMA grant after flooding in June 2008. The program allows the city to purchase the water damaged properties, demolish the structures, and turn the properties into public green space.