Metal to fiberglass bonding
I have an Itasca Class A MH with a front panel access to the engine compartment. The front panel is attached to a metal frame that is attached to the front of the MH on the inside. The front of the ...
Forum Discussion
Epoxy or structural adhesives produce the strongest bonds in general where bond lines are small. Once a bond line gets over .030 you loose a lot of strength. If the bond line is over .125 ins it has very little strength left. Also consider what caused the bond to fail, was it vibration, poor surface preparation or a thick uneven bond line. I'm not sure exactly what you are describing but if any off these conditions are present I would go with a lower strength bond that is more ductile like the 3M 4200 or 5200 it is much more forgiving and will fill the uneven bond lines, it is more like a caulk. It sounds like the area that you are bonding is not a highly loaded area and the 5200 would be ideal for your repair.
