Varnishing laminate flooring?

Apologies if this has been covered before!
I would like to lay laminate in the downstairs loo but would like to varnish it to give it extra bit of water resistance!
Is that possible and what preparation/lacquer I would have to use?
Any advice appreciated!

Gordan 'Ballistic' Bijelic
(mind the spam trap when replying)
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.