Many seawall designs incorporate a cap. There are many material options for the cap with each offering different benefits. CMI offers three cap options: the ArmorCap, TimberGuard, and UltraComposite.


These aluminum caps are designed to provide additional design integrity while providing aesthetic benefits. You can color match your ArmorCap to your ShoreGuard vinyl bulkhead as it is available in grey, clay, slate and brown. CMI’s ArmorCap is also available in its natural color, mill finished aluminum.

Some prefer to construct a seawall cap using TimberGuard marine lumber, which is also available in multiple color options. These are available in all standard lumber dimensions.

Not often seen on residential bulkheads due to it’s high strength rating, UltraComposite caps are also available and are especially suited to composite seawall and bulkhead solutions.