Reply To: 14foot 1988 Grumman GSS with Evinrude 70hp

[Gary H.]

I am no expert but what I have heard, Grumman aluminum was good. My father built the Hellcat fighter in WW2 and after the war worked in the lumber industry. He always said that their way of riveting panels together was superior. Double rivets and closer together even with their boats later on.
As far as marine grade plywood, it has thinner but more cross layering than regular construction plywood. Also, all knot voids in the plies are filled ( no air voids). The adhesive that holds the plies together is also exterior grade.

Pressure treated is a chemical treatment that is forced into the wood using pressure. It is mostly for insect prevention but some wood rot prevention also. Wood when it gets wet will eventually rot. It is a natural fiber product. There is no way to stop it.