I will give them a call Monday and get a price to compare. Thanks for the info. Drums and foam on the bottom should be good for a few years..

Just fill your plastic drums full of empty coke, water, gatoraide bottles. Dat way if your drum is compromised you still have floatation. You could also fill em wit ping pong balls.

cant use regular fiberglass resin on closed cell. need to use epoxy which is pretty high around 100 bucks a gallon. when i was younger i tried to make a foam boat out of the sheets of close cell used for insulating and covered it with poylester resin and it melted the whole thing.

Tge foam I'm talking about is not tge same a tge foam sheeting

We speak english on dis here forum! Are you hangin out wit Ratdog tonight?

Try to find some of those black plastic boxes full of foam that they build floating docks with.
My friend found some used ones for his dock.
If you want me to, I can find out where he got them.
They are what you need if you want foam coated with plastic.

I typed the wrong so many times my freakin phone changes it to tge ! Lol

How about the flotation they put around riser pipe used offshore.

I've had foam under a camp and it sucks. Don't do it. They come apart and all sorts of stuff grows in them. Google dock floats. They are not to expensive easy to use and last forever. MUCH better than styrofoam or drums.

Out of curiousity I went to dock floats.com and ran a price on a 2' x 2' x10' foam block . For 1# foam was $120 and 2# foam was $220. I have no idea what the difference between 1# and 2# could be unless it has to do with density. I think the plastic drums would work good . Dem tangs are tuff...

If you are patient and look hard, you will find pontoons from pontoon boats fairly often listed for $500-$1000/pair.

Houseboat floatation
 

My uncle's houseboat floats on 2 foam filled doughnuts that are encased in fiberglass. The doughnuts measure 10 ft and they're fastened together with stainless steel brackets and bolts. The entire houseboat is 20 ft X 30 ft with the 2 doughnuts being in the center. We put 33 drums around the doughnuts for stability and to support the porches on both ends. Houseboat has been docked since end of 05 and the only thing we had to do so far was swap out a few barrels every other year or so. The barrels are not foam filled just seal the bung and the air will stay in there a long time. When you see the houseboat listing to one side pull out some old barrels and put in new ones. You can usually reuse the old barrels b/c they usually just leak around the bung threads. Hope I helped...

Thanks for the info it looks good. I will be starting next time I'm off work...