Teak or no teak...
Most of teak decks being constructed today will not leak as they are ''glued'' down and the screws that were used to initialy ''spring'' the staves into place are removed and the hole is filled with epoxy, etc. ... then a wooden bung is used to cover the hole if a screw was used to hold the board down while the glue cured. ..... I wish my deck was laid in this manner but it wasnt; but will be, when I ultimately have to repair it.