Foam flotation

M

Mark Welinski

Member
Simple question I realize may have been answered in another discussion, but will the expanding foam we buy for insulation around doors and such, if used to add floatation to a boat, soak up water over time and add weight to my boat? Don't need a lot of flotation, but the places I do want to replace are relatively small and difficult to get at, and I want to avoid the expense of buying the 2-part foam mix from dealer.

Cutting corners can be costly in the long run, but I'd like to get a little help with an older aluminum canoe/skiff/duckboat.
 
Simple question I realize may have been answered in another discussion, but will the expanding foam we buy for insulation around doors and such, if used to add floatation to a boat, soak up water over time and add weight to my boat? Don't need a lot of flotation, but the places I do want to replace are relatively small and difficult to get at, and I want to avoid the expense of buying the 2-part foam mix from dealer.

Cutting corners can be costly in the long run, but I'd like to get a little help with an older aluminum canoe/skiff/duckboat.
Click to expand...


Don't waste your time or money. Buy a quart of the right stuff and pour it in. or buy a block and shape it to fit.
 
Due to the cure structure most spray foams in a can end up being mostly open cell once applied. That will not help you in the long run with accumulating moisture.

If you have a spot to fill that will be constantly exposed to water, then the two part foam is the only way to go.

If you live in a place that is served by UPS ground then go to us composites and order a kit.

http://www.uscomposites.com/foam.html
 
I appreciate the info too. I'm looking to put some foam in the back part of my canvas Canada goose decoys. They float a little tail heavy and start taking on water. I'm going to give it a try.
 
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