On Apr 11, 7:52*pm, "Rick Hughes" wrote:

I thought that foaming polyurethane glues were not very good for external
joinery .. great for tight fitting joints and fast cures, but strength not
brilliant ? ... or at least that is what I read here.

Have a look at Sikaflex, 261 or 221 IIRC

Marineflex is pretty much the same at a better price.

cheers,
Pete.