"Steve L." writes:

I have some water-damaged 1" vertical end-grain balsa core in my
fiberglass deck. What is the best replacement material available?

These days that would be Divinycell foam.

Unless you buy a full case, don't have a heart attack when you get the
price.

You will also need epoxy fairing compound to lay down the foam.

If you have ever laid a tile floor, it's the same process.

Yes, it is a nasty job.

Yes, it will take at least twice as long as you estimate.

Yes it will cost more than you plan.

--
Lew

S/A: Challenge, The Bullet Proof Boat, (Under Construction in the Southland)
Visit: http://home.earthlink.net/~lewhodgett for Pictures