Injecting epoxy in wet core

[mitiempo]

How big is the wet area? In my opinion, if you cannot remove all the wet core easily through a single small access hole then you're better off to cut open and recore it properly. The other problem with your plan is that if it doesn't work, and I think the consensus is that it won't, you have caused whoever does the future recore job (you) a great deal of work removing the skin to do it properly. Recoring is very hard to do properly from below and very messy. Vacuum bagging will help but still not necessarily a guarantee of successful bonding. The best way to a successful job is to do it from the top. While this means repair to deck coating - painting or non skid - it will also go much faster depending on the size of the wet area to be recored.
Brian

[KindOfBlue]

I recently went through this. I considered all options and after people pounded in "get rid of the bad", I decided to recore the area. I'm glad that I did because now I know that its solid.

After carefully marking off, cutting and removing the top skin from the damaged area, I realized that the damage was larger and I had to keep cutting. I think that its typical to find that the damaged area is about 15% larger than you thought.

Good luck.

[CharlieCobra]

It's best to re-core because CPES does NOT displace water. The core has to be totally dry to use epoxy on it.