On Jun 23, 10:20 am, "Don Dando" wrote:
Hello,

I have frequently used 5200 to seal joints when restoring and building wood
boats. Many ads for used boats state that the boat has a 5200 bottom..

I contacted 3M for information on the process and they replied that 5200 was
used in many marine applications but they knew nothing of the so called
process termed "5200 Bottom".

Can anyone enlighten me on this?

Don Dando

Frankly I would never purchase a wooden boat where 5200 was used any
where on board. Wooden boats frequently need to have various parts/
pieces removed for repair and restoration, unfortunately 5200 is too
strong as an adhesive and it is damn near impossible to separate any
thing glued together with it, short of total destruction of the
component parts. There are plenty of good below the waterline
adhesives out there that are durable enough to last almost forever,
but still that allow you with pull and cut components apart, and the
can scraped or sanded off without destroying the underlying material.

The only thing I would ever use 5200 for is storing nuclear waste, and
gluing the front door closed after the kids turn 18.