BoatBanter.com - View Single Post - Birch Multi-layerr plywood versus Marine Plywood

Lew Hodgett

wrote:
The situation is that many suppliers are making the claim that
their plywood
is of marine grade.
I do not take any chances I ask for a sample piece and give it the
boiling
test.

Good idea if you can't trust the supplier.

I use an industrial supplier with a reputation to protect.

They are not about to crew around for a few $.

My daughter build a 12 foot sailing dinghy using 5 ply's marine
plywood at
more than $100.00 per sheet. Further to that I told her to
encapsulate the
plywood pieces and the finished boat three time with epoxy and she
did. Her
friend build the same boat with so call marine plywood and only
epoxy the
finished boat once. Both boat have been store outside during cold
Canadian
winter under snow and hot summer. It has been 12 years now my
daughter's
boat look as new while her friend's boat rotten and had to be
disposed five
years ago.

That's why the coatings industry exists.

Lew