Protecting PCB from Moisture

[TheFluffyDog]

I am going to be building a sub ambient cooling system. Its mostly just for fun, as in, I realize the money may be better spent on other components. The thing I need to know is, if anyone recommends a better way, or certain product for keeping moisture off of the PCB. I feel like a moisture resistant coating on the whole MOBO and other components is necessary, but does anyone have any idea of a permanent, low profile insulating material that could be used directly on and around the coldest components. Regardless of how much coating you put on, it wont prevent the actual formation of condensate which i would also like to minimize. And no, I don't feel like dehumidifying the intake.

 

[thx1138v2]

I don't have a specific answer for you but you may find useful info at the following links. The first is interesting to say the least - 6GHz overclock.
https://www.youtube.com/watch?v=QmSBaizEqkk
http://www.frostytech.com/articleview.cfm?articleID=2424

You might look around those sites to find info and other links on sub-ambient cooling.