New project, transom question

[tmcalavy]

I just acquired a 63' Texas Maid 15 ft. Impala runabout, all aluminum. Will have to pull/replace the floor and transom (from top/inside). Going to use tashasdaddy's recommendations for the floor, but need to ask about the transom. Looks like the old board/transom is plywood. Would it be best to replace it with ply or go for a piece of dimensional lumber. It will be sealed of course before installation. Should I glue/bond the board to the boat skin or just secure it with the fasteners that I take out? I attached a brochure that shows the boat, hope it shows up well. The boat came with a 62 Evinrude Lark IV selectric shift...absolutely free if there are any takers out there.

 

[tashasdaddy]

Re: New project, transom question

what i did on the duracraft, was remove the splash well. then use the 3 piece system to replace, the outside layer, is 2 pieces split down the middle, the inside laps both outside pieces, then thru bolt. sealing with 3m 4200. sealed wood with clear sealer, so i could see any water intrusion. nice boat project. lines are plywood for transom. 3/4 exterior, was actually scrap sturdy floor tongue and groove, housing subfloor.

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[Mark42]

Re: New project, transom question

I would use pressure treated ply. Some folks worry about pressure treated wood corroding aluminum where they contact. So put a coat of epoxy and glass on the side touching aluminum. I would leave the exposed side uncoated so it can dry when it gets wet. If you don't use pressure treated, it needs to fully sealed on all sides with poly or epoxy. The poly or epoxy will eventually fail letting water in and then the rot starts all over again.

Go with pressure treated. Just make sure it has time to dry before you start fabricating and laminating layers.