Have a piece of oak veneered mdf that i wish to use to make a shelf
along
side the bath.
snip

Don't want to burst your bubble, but you can't get there from here.

Doesn't make any difference how you try to seal the MDF, my guess is
that
it will take about 6 months before the MDF starts swelling from water
splash and high humidity in the bath room.

If you want an oak shelf, try oak veneer over a plywood core.
Lew

thanks for the advice. as a matter of interest can this adhesive be
used
as a sealer generally?

Talk to sign makers who do out-door stuff. They have tricks they use
to seal MDF.


Permanantly, or for a lifetime of say 5-6 years? Serious question - as I
wonder if there are secret herbs and spices to seal it as opposed to hide
the problem for long enough for decent life in use of that specific
application. I shy away from MDF ever since I read here about the problems.
I must admit to not having been sufficiently educated on the dust problems
of MDF and the hit the tools take. Haven't used it since.

I guess my brain tells me MDF is not the product for wet areas, just as chip
board isn't (even though it is used a LOT in Aus for just that...)

So budget may lead to MDF/Chipboard, but QUALITY leads to other
alternatives. Almost makes me think of another wise phrase ex the
Wreck..."Buy once, cry once".

2c

Mike
Brisbane Aus.