Cut Away of Teak Deck Picture One

This picture shows how a teak deck plank has withstood 80 years being underwater Top right corner you can see erosion of the wood approximately 1/16th down you can still see the grain of the teak wood. This would depend upon conditions and exposure to the elements it was under such as current, silt etc. Teak Plug that was used was to cover up the bolt and nut which held the teak plank down. Underneath the plug they used a watertight caulking to prevent water from entering and causing corrosion.