Originally Posted by Lionel
Thanks for the info.
I have looked for the bolts and have not found them.
I will put bolts through the floor and frame flange.
I will work on the self drilling screws. There are more heads in the compartment than screws coming out the bottom. I will work on each one from inside the trailer and make sure I have enough that seem to be working to hold the floor to the frame and take out the rest. I will plug the holes with body putty.
I have spoken to a person who worked with fiberglass who said that folding the fiberglass over the plywood 2 inches made a very secure bond.
Thanks again for the input.
The automotive industry "Bondo" types of fillers are not a structural adhesive filler. That is why I suggest epoxy putty, it is a structural adhesive filler. It is much less likely to loose its grip on the interior edges of holes in metal, wood, fiberglass, etc. and it can rebuild strength to layers of plywood versus Bondo filler that can't do that. Also the auto industry fillers are hygrosopic meaning they will absorb moisture after curing. Epoxy fillers do not absorb moisture.
Rule is do the job right the first time or you will be doing it again. Most people don't realize that Bondo has its weaknesses, I certainly did not before I started living among professionals in the marine industry. They straightened me out on what to do for repairs versus the common knowledge that gets applied to patching up cars on the cheap.