filling in jon boat floor

J

jim bosanny

Active member
Lou or Ed. L:
Can you guys suggest the proper material for filling between spars on the floor of a jon boat? Seems I remember someone suggesting construction insulation as a method?
wis boz
 
Wisboz,

It depends on the height of your ribs but If you look at a G3 or a Mirrorcraft, I believe they use the 2" pink foam blocks under an aluminum floor. The lund line uses expanded foam. I don't think there is a wrong way. Personally I have some 2" blue insulation foam that I'm going to use under a plywood floor. I'm not looking for flotation as much as just a filler under the floor to keep it from flexing when I walk on it. I don't think the construction expanding foam is your answer. It would take a boat load of insulation......;-0 very expensive...Good luck.

Ed L.
 
Lou or Ed. L:
Can you guys suggest the proper material for filling between spars on the floor of a jon boat? Seems I remember someone suggesting construction insulation as a method?
wis boz
Click to expand...

There is a higher density foam that can be bonded to the floor, between the ribs but I can't recall just what it is right now. There's a "cross linked" gray foam that we've used in some applications but not on the floor. I've bonded it to the underside of decks and gunnels.

Are you covering over this material or are you going to be walking on it?
Later partner, tired and gotta hit the sack.
Lou
 
Lou:
We would be walking on it with probably putting a carpet flooring over it. The pink construction material we looked at can be dented with thumb pressure. The main objective would be to fill in between the ribs (2") for easier walking with a concern for weight?
wis boz
 
If your not going to put an alum./wood floor on top I'm not sure what you could use. If your thinking of some sort of spray in construction insulation that would bond, and harden, I'd be careful. If you have a riveted boat, and you happen to loosen one you'd play heck gettin' it fixed.

Lance
 
I've used the blue board insulation with a thin sheet of plywood (1/2" if I remember correctly) over it. The plywood spreads your weight around so it won't compress the foam. Aluminuum would be nice but is pricey.

Charlie
 
Lou:
We would be walking on it with probably putting a carpet flooring over it. The pink construction material we looked at can be dented with thumb pressure. The main objective would be to fill in between the ribs (2") for easier walking with a concern for weight?
wis boz
Click to expand...

Wiz,
Email me your address and I'll mail you a piece of some 2", cross-link, grey foam that we've used in some of our boats at times. I pick it up down in Elkhart, Indiana at a foam place down there. It comes in 4" thick sheets and they slit it for me. This stuff is pretty tough and might tolerate "traffic".

Another option is that black closed cell foam that's used by Coleman in their canoes. I've picked that up in 2" thickness at the Elkhart place also. We tested it for holding paint but paint doesn't stick to it. What does stick extremely well to it is..........Rhino-Lining. We were looking into cutting that foam and having it Rhino Sprayed for floatation packages.

Let me know how we can help.
Lou
duckguylsb@juno.com
www.lockstockbarrell.com
 
Lou:
It's my son's boat and he's 150 miles from here so I'll have him get on the forum, read your info and see what he wants to do. Appreciate your input!
wis boz
 
See if you can find some Black Archery Target Foam. The foam is self healing and comes in many thicknesses and there is an adhesive for bonding it for thicker applications/needs.
Lou
 
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