In message , Andrew Mawson
writes
It seems that it's NOT 7 ply but 9 ply, the two outer 'plys' being only
6 thou thick and basically just a colour layer that is paper thin.

Even 30 years ago when I needed quantities of decent marine ply, I had
to trawl round the wood yards, inspecting samples carefully. I was often
in the position of being told that they were waiting for some ship to
come in for the next decent batch.

I think there were about 4 yards to visit, and who got to know me.

B & Q was not one of them.
--
Bill

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