: If this is pink then it is probably not the kind of foam as you would want
: for a seat. It is most likely a polystyrene foam (the blue stuff is real
: Styrofoam (R) which would float, but is not as flexible or comfortable as
: the synthetic rubbers used in the closed cell foam for kayaks.

: You can use it for flotation. You might get a better price on the full 4x8
: sheets of similar material. I have seen those available in 2 inch
: thickness. Cutting those into large blocks would give you some significant
: flotation, and you would eliminate the folds.

: You should be able to glue several layers of these materials together to make
: a larger block of flotation. Try using construction adhesives, like
: "Liquid Nails" which comes in a caulking tube. Check the label
: to see if they can be used with foam insulation. Some brands have solvents
: that dissolve the plastic.

: This is nice cheap stuff to use to pad out areas in the cockpit to reduce the
: amount of water that can come in if you capsize.

: Most of these foams do not have very good resistance to abrasion. Unless you
: cover it with something you'll get bits of plastic all over the place if
: you regularly rub against it. Try using a spray adhesive and stretching
: some Lycra or stretch-nylon swimsuit fabric over your foam construction. I
: think it was Spidey who used this technique with his minicell seat with
: good results.

: Other people cover this material with fiberglass and epoxy resin (polyester
: resin will dissolve styrene plastics) You can use this technique to make
: buoys, rafts, surfboards and sit-on-top kayaks, too.

: hope this helps

: PGJ

Paul, I have this printed out to go over when I get to this phase. I was going to use the pink foam until I came across this white foam for use in wet basements. I will check out the blue also. I have seat making bookmarked from a couple of the board members. Thanks,

John