[flyingfrizzle]

To re-fill the box stringers with 4lb foam it will take little over 3.5, 1 gallon kits so you will need: 4 kits just for the stringers. 4 gallons of part a and 4 gallons of part b (8 gal's total). Not sure how much to do the outer areas. Just done my sf and make sure you have every thing ready and mix it well then pour fast. You don't have much time once mixed


To meet us coast guard flotation requirements I think they require the 4lb density or less but not sure on all the floatation requirements. Maybe some one on here knows more about the requirements.