Pour Foam Question

[cdnfthree2]

I found pour foam online for $28 / 2 cubic feet, and $78 for 8 cubic feet.

6 cuubic feet is recomended for a 16 ft fiberglass with a 50hp.
Should 16 cubic feet be enough to float a moderately heavy 19ft CC with an 150hp Johnson on it and about 600lbs of people? Thanks

 

[jcsercsa]

Re: Pour Foam Question

If i rember right , I got 14 cubic feet in my 15.6 tri-hull, and it was about 950 in dead lift !! 16 cubic feet should do perrty good !! John

 

[slasmith1]

Re: Pour Foam Question

Sorry for repeating myself again but foam adds no buoyancy to a boat zero zip nada. it is for structural rigidity only. for every pound of foam you add to your boat you loose 1 pound of buoyancy. put the foam on a scale it has mass (weight) the laws of physics are simple. your boat will float with no foam it just may flex and crack your gel coat the first time you hit a good wave.

 

[jcsercsa]

Re: Pour Foam Question

Sorry for repeating myself again but foam adds no buoyancy to a boat zero zip nada. it is for structural rigidity only. for every pound of foam you add to your boat you loose 1 pound of buoyancy. put the foam on a scale it has mass (weight) the laws of physics are simple. your boat will float with no foam it just may flex and crack your gel coat the first time you hit a good wave.

Plus plus if you sink her [ god forbid ] she will float !!! thats the main reason i add it , I take my kids out all the time and i want to be safe , above all else !! John

 

[tashasdaddy]

Re: Pour Foam Question

read this. http://forums.iboats.com/showthread.php?t=283667

 

[salty87]

Re: Pour Foam Question

Sorry for repeating myself again but foam adds no buoyancy to a boat zero zip nada. it is for structural rigidity only. for every pound of foam you add to your boat you loose 1 pound of buoyancy. put the foam on a scale it has mass (weight) the laws of physics are simple. your boat will float with no foam it just may flex and crack your gel coat the first time you hit a good wave.

foam weighs nothing compared to a boat hull with an engine. in my 23' i think i might have ended up with 10lbs of foam or something like that. please excuse me if it was 15 lbs, even if it was 20...so what?

put in as much as fits and don't sweat it too much. foam mainly helps displace water to make sinking as slow as possible....if you have the correct amounts in the right places, the boat won't sink at all. you can still have the right amount but in the wrong places and the boat could flip over in the water if submerged.

 

[slasmith1]

Re: Pour Foam Question

foam weighs nothing compared to a boat hull with an engine. in my 23' i think i might have ended up with 10lbs of foam or something like that. please excuse me if it was 15 lbs, even if it was 20...so what?

So like I said you now have 10, 15, or 20 lbs of added weight in your boat.

put in as much as fits and don't sweat it too much. foam mainly helps displace water to make sinking as slow as possible....if you have the correct amounts in the right places, the boat won't sink at all. you can still have the right amount but in the wrong places and the boat could flip over in the water if submerged.

If a vessel I'm on is that far gone I could care less about foam as a responsible skipper I would be getting everyone safely off in life vests.

 

[cdnfthree2]

Re: Pour Foam Question

Here is some info on my particular boat that may make the whole foam regulation something to overlook completely if not for water retention reasons alone. It is 19ft. The outboard is of corse in the rear. directly in front of that, is a 40 gallon gas tank. Not much room for foam there, huh. Even if I could put enough in the front to keep it above water, the gas tank and motor would be submerged regaqrdless. Then again, you have to pull it out even if it does sink or your just a jerk. So, I guess I'll load it up.

 

[tashasdaddy]

Re: Pour Foam Question

if you have some area around the transom and gunnels, you can foam there. a lot of new boats had foam under the gunnels, and compartments on each side of the splash well.

the areas where the white access panels are, is full of foam

 

[cdnfthree2]

Re: Pour Foam Question

Cool, cool! I have nearly 8 inch gunnels. That should be enough to float it.