Originally Posted by talonawd91
From what I have seen of the foam in our boat, it was not quite 3m scrub pad, but more like the green foam block used in flower center pieces. It sure does let water run though.
Watchcap, Feel free to drop me a line at talonawd1991 at yahoo dot com.
Yeah, that's it. Here's a couple core samples taken today from our 1972 Albin Ballad:
The one on the right is from just in front of the seahood. It is dry and well-adhered to the skins. The one on the left is from near the port side chainplates, which have probably been leaking for twenty years. The foam is damp to the fingers when squuezed, and it isn't particularly well-stuck to the skins.
But the side decks don't flex, and as long as the foam keeps the skins apart from each other, the essential strength of the core-box design remains. The decks do not flex when you walk on them. And the wet foam has not turned to slurry as balsa often does. It is still quite rigid. I suspect Albin made the outer skin so stout, the core and inner liner are almost optional.