Foam between stringers

[EP]

What kind of foam should I get for between the stringers and where should I be able to get it?
Thanks

[EBEACH]

use a two part foam mix, 2lb density. Your fiberglass supplier should carry it. Or check with an online supplier.

http://www.raka.com/
http://legnosboat.com/productindex.html
http://www.uscomposites.com/products.html
http://www.fiberglasssupply.com/default.asp

[EP]

the two gallons of the foam goes 9.2 cubic feet, has anyone else refoamed their 20 cc and how much did they use? not too sure how much I should get.