I love everdure, and did both my Mozzys with it when you do the treatment water it down with the special thinners and just keep doing coats until it won't absorb anymore, if you want to varnish over it you can but use the interluct varnish that's compatible. When using Everdure you apply each coat before the last coat sets so you have a chemical bonding reaction between layers. With varnished wood the trick is to sand and revarnish before the varnish gets old and breaks down so it always looks good so a quick light sand and thin coat every couple of years