replace or dont

[6buoys]

after removing the old foam for stringer repair is it best to replace or not . and if so whats the best foam t use

[DonV]

I think.......the foam was originally more of a "mold" in which to wrap the fiberglass to make the actual stringer. The fiberglass is the strucural part versus the foam.

[Snookerd]

The foam was originally used for flotation. I've seen it redone with it or without it. Closed cell should not hold water and most folks do add new foam

[3rdday]

The GEOMETRY of the fiberglass and its thickness is what hives the design its structural integrity.

[alexh]

I would replace it, simply for added flotation. You can buy 2lb density 2 part poly foam online, or spray insulation companies can fill them in for you (they use the same stuff).