Okay to coat before butting panels?

[Rich Young]

Hi, everyone.  Quick question: it would be slightly easier for me to coat the interior surfaces of all panels, then glue the butt joints. It's just harder to find a safe place to let them cure if they're already joined into the longer sections.

 

But I'm not sure if butting the alread-coated panels would be as strong as butting bare plywood.  Does it matter? 

 

--Rich

[paul anderson]

a chemical joint will always be far superior to a mechanical joint ie sanding epoxy coating before glueing.on my first hull i did what you proposed and as far as i can see it will be fine,remembering it will be glassed too.

but to be honest i think both techniques are fine as long as the surfaces are clean and well prepped.

[Ralf]

If you sand the surfaces to be glued well, it is no problem.

[Martin]

My plans said to first coat the internal surfaces, and then do the joints. For sure you need sanding in between. So far I could not see any problems.