Anyone have any advice about using off-the-shelf expanding foam for flotation in a boat restoration. I had to cut out some old flotation to get into a bilge line and would like to re-fill the compartment. Since it isn't that big, I didn't want to invest in a batch of the 2 part closed cell and was hoping to use something like Liquid Nails, Durafoam, etc. I know some are latex-based and others are polyurethane-based and would think the poly-based would be better. However, I am somewhat concerned about the closed cell properties and afraid about water absorption. Compartment contained styrofoam and closed cell foam as OEM.<br /><br />Any advice would be appreciated. This is an above water compartment and I don't expect much direct water contact.<br /><br />FT