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2# or 4# or 6# foam for refoaming boat

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  • 2# or 4# or 6# foam for refoaming boat

    I dug out a lot of foam when doing my fuel tank project. I chased a leak all the way up to the bow fish box, so all in all a lot of foam was taken out. I have a NAC warehouse a short drive from me and they have pretty good prices but only have 2 and 6 pound foam. But i can get a 2# kit(1 gallon of a and one gallon of b) for $35. the cheapest place i found online, us composites, is $67 plus shipping for that kit. They have 4# though.

    Would i be fine refoaming with 2#? would 6# be too overkill? The 2# would be the most economical choice for me by far, i didn't get a price on the 6#

    thanks
    1991 221 w/ 225 yamaha[br]Margate NJ[br]221 Fuel tank/rewire[br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=58899

  • #2
    At those prices, it must be open cell foam. You need closed cell foam, 2# for flotation in the hull and #4 or 6 for support around fuel cell.
    [br]Michael R. Delgado[br]1972 Mako 22[br]http://classicmako.com/forum/topic.asp?TOPIC_ID=15745[br]1976 Mako 25[br]http://classicmako.com/forum/topic.asp?TOPIC_ID=18013&SearchTerms=mako,25[br]

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    • #3
      there was a miscommunication on the phone. I asked 3 times if it was 35 for a kit and when i called back to order it was 35 per gallon. Anyway that was still cheaper than ordering online and i can return what i don't open. i ordered 2#. they can get 4# but it would take 2 weeks
      1991 221 w/ 225 yamaha[br]Margate NJ[br]221 Fuel tank/rewire[br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=58899

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      • #4
        What is a NAC warehouse? I need to buy a bunch of 2# foam and would like to find cheaper than aeromarine

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        • #5
          Us Composites 4#
          David, New Kent, Va[br]



          [br]Project Thread: http://www.classicmako.com/forum/top...TOPIC_ID=21067[br]

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          • #6
            I used both 2# and 3# when I refoamed my hull. I used the 3# for the fuel tank compartment and 2# elsewhere. Quite frankly the 2# foam was stronger and more dense than what I removed from the hull. Whatever Mako used at the factory had a very large cell structure and was probably the equivalent of 1# or 1.5#

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            • #7
              Two pound for non-structural, 4 pound for fuel tanks.
              Sold the 17\', moved to FL... I need a new handle.[br]1991 Jupiter 31, current project[br]2005 Everglades 243, sold[br]2012 Contender 23 Open sold[br]1989 Intrepid 246 WA--gone to Australia[br]1973 Mako 17--sold with regrets[br]1992 Mako 17--started it all[br]Pompano, FL

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              • #8
                I just went thru this myself. Like the other gents stated, use the 2# for under the fish box and save the 4# for around the tank. The 4# doesn't go very far. About 4 cubic feet per 16lb kit compared to 8 cubic feet for the 2# I bought the kits from US Composites. Total cost is around $88 with tax and shipping. Just wish I'd seen this post before i re-foamed. Good luck.
                Chris[br]Fort Myers,Fl[br]1986 Mako 20C[br]2003 Yamaha 150

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                • #9
                  quote:


                  Originally posted by Yourtruenorth1


                  What is a NAC warehouse? I need to buy a bunch of 2# foam and would like to find cheaper than aeromarine



                  north american composites. They have one warehouse in mays landing new jersey. Picked it up the same day
                  1991 221 w/ 225 yamaha[br]Margate NJ[br]221 Fuel tank/rewire[br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=58899

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