Aluminum Corrugated Sheeting 6061 interlocking sheets are hands down the best for footer systems in South Florida. Aluminum seawalls or footer retaining walls are installed at the base of existing walls that have undermining of soil from the property with leaking water under the existing wall. Aluminum Corrugated Sheeting 6061 are aircraft quality interlocking sheets that can be driven into rock or until failure. Footer Systems with Aluminum Sheets are installed at the base of a wall driven usually three feet into existing berm and are filled with 3,000 PSI Concrete mix. Rebar is also installed in the footer system which is tied to a series of 3/8 bolts installed in aluminum sheets approximately every four feet. Trust in All Power Marine to install or repair your aluminum seawall footer.