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Replacing floor of center console boat.

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  • Replacing floor of center console boat.

    I'm replacing the floof of an 18' center console. PLywood went soft. Stringers are ok. Whaat are the alternatives to plywood. Foam sandwich?

  • #2
    to iBoats . . .

    The short answer is yes . . . A fiberglass floor with foam backing encased in fiberglass is a way to go. Others may have some additional suggestions. The challenge will be making 'the sandwich'.

    After you have a few posts, you can post pictures so that the folks here can better visualize what you are dealing with.

    Also, I would triple check those stingers, bulkheads and transom. Lots of folks rip up the floor and think the stringers look/feel OK, only to later find out that they are not.
    Best regards, Ted . . . . Cape Cod, MA

    Current Boats: Formula 330 Sun Sport, O'Day Mariner Sail #3224, Sunfish
    Past Boats: Catalina 22 Sail #10531, Formula 242 Sun Sport
    Twin Mercruiser 7.4 LX MPI (0F802036, 039), Bravo 3's (0F806198, 199), Mercury 7.5 HP (1969), Johnson 4.5 HP (1980)

    My Boating Web Pages: http://www.tpenfield.com

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    • #3
      Welcome aboard

      As Ted mentioned, go back and check the stringers and transom. the floor is always the last to rot.
      Cheesehead boating the Gulf Coast of FLA 27.51° N, 82.53° W

      1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - https://forums.iboats.com/forum/owner...988-rogue-2420

      Past Boats
      1970 Wooster Hellion - Merc 9.8
      2002 SeaRay 190BR - 5.0 - A1G2 - "Cheeseheads in Paradise"
      1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

      What’s behind you doesn’t matter.Enzo Ferrari

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      • #4
        If you have a rotted floor without rotted stringers and such, it would be amazing. But I think the stringers are merely hiding a surprise inside. Take a drill and do a few test drills looking for light colored shaving to come out. If the shavings are dark and/or wet, they are gone! If you do have quality stringers the test holes can be plugged over.

        Oh and welcome to iboats. Glad to have you as a new member.
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        Minn Kota 599 Project https://forums.iboats.com/forum/boat-...ta-599-project

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        • #5
          We're doing the transom and the stringers are glass channels. No wood.

          My question is what core material. Coosa (aka Penske)? which one? Core-Cell? Divinycell?

          Biggest span is about 18"

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          • #6
            pics
            Most times I'm wrong, Most times I stand corrected..But...Sometimes I'm right.
            1983 SportCraft Deep V OSFF 222 Cuddy Rehab
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            • #7
              Any of those options above have very little tensile/shear strength, so you will need to compensate for that with quite a bit more fiberglass/resin than a standard wood build. Nothing wrong with that, but just going to cost more money. If it were me, I wouldn't even use a core material for the stringers if you're not going to use wood. I would make template forms for each stringer out of wood or plastic, and then layup your stringers over it and then remove the filler and glass them in hollow. You could also pour structural expanding foam in each stringer to give it some extra stiffness.

              The transom definitely needs a core and any of the above will work great because its almost entirely compressive loading which they are great at.
              1996 Bayliner Capri 2050 40th Anniv Edition - 5.7 Merc - UNDER CONSTRUCTION

              Check out my Youtube channel for a documentation of my 96 Bayliner restoration:
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              • #8
                The stringers are fine.
                I'm replacing the deck that rests on the stringers and am lookng for non-plywood alternatives that won't rot out and will be lighter.

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                • #9
                  It is coosa board and it is cubic dollars more.
                  Dance with the waves,
                  move with the sea.
                  Let the rhythm of the water
                  set your soul free.

                  1987 Four Winns 170 Horizon.

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                  • #10
                    Sign up today
                    Pictures
                    Best regards, Ted . . . . Cape Cod, MA

                    Current Boats: Formula 330 Sun Sport, O'Day Mariner Sail #3224, Sunfish
                    Past Boats: Catalina 22 Sail #10531, Formula 242 Sun Sport
                    Twin Mercruiser 7.4 LX MPI (0F802036, 039), Bravo 3's (0F806198, 199), Mercury 7.5 HP (1969), Johnson 4.5 HP (1980)

                    My Boating Web Pages: http://www.tpenfield.com

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