Well, first thing to determine is if the teak
is screwed down. From the picture, I couldn't really tell, I did not see any plugs to cover screw holes. If it does have plugs, look really carefully to see if there is a little smear of rust coming out around the plug
. That would be an indicator of moisture underneath, and degradation of the screw.
Now, if you know the construction of the boat
, if the deck
is cored or not, that could help. If the teak is over plywood
, and it has screws, there is a chance the plywood
underneath is rotten. Proper repair
is possible, but expensive, even when you do it yourself.
If it's glued, measure the thickness of the thickest and thinnest bits, and that will give you an idea of the wear, because it all started out pretty much the same thickness. If it's glued, any water
intrusion into the substrate will be from screwed on deck fittings and the like, and is usually fairly easily fixable.
If you love teak decks, phone
around to a couple of good boat builders and ask how much a new one would cost. Be aware that the new plantation teak is not as durable a timber as the older teak was.