Mark _australia said..
Saying just Gorilla glue is not great. They make many products that will eat foam. All bar one, is an expanding polyurethane glue. it works but I'm not a fan. It sets by absorbing moisture and I've seen instances of it not fully setting. Then if you get moisture in later it reacts all over again and makes a huge bubble. that's why a 2 part product is always going to be better. However, it's still not the ideal way to do it.
As to your previous question re foaming resin it's an additive. No you cannot just mix resin and foaming PU
All this really depends on how much damage and how big. Well, and value of the board, sometimes the dodgy fixes are worth it
any boat place will be aware of the two pack expanding PU foam. Yanks call it A-B foam or pour foam. Might be the same up your way
Hey Mark, yes I've had some time to look into the two-part PU foam and agree it's likely the best way to go rather than a canned product which is designed for home insulation. Looks like this stuff can be mixed in small batches and injected with syringes under the sandwich layer where it expands to fill and bond voids in the EPS. As far as board value goes, I picked up this board for only $350CDN. A new comparable board would go for somewhere between $2500-$3000 so I don't mind putting even a few hundred into repairs if it can save it. We really like how the board handles and performs too.