Electric Infloor Heat

[MJBaldwin]

Just trying to get some opinions on how to do this. I bought a 60sqft mat from pexuniverse.com (HeatTech) is the brand name same as all the others from what I have read online. My question is prep and installation. I am building a  new home this is going to be located in the master bathroom which is OSB flooring (Blank Slate to start with).  I have read I could put this right onto the OSB and then trowel (3/8" plastic) over to tile my flooring. OR i could do a self lever concrete over the mat to make install of tile a little easier?  I am installing the 1"x1" Hexagon tiles which are in a 1'x1' mat.  Or how would you go about this? My father in-law thinks I should lay tar paper down then heating mat with a self leveler over that.  Just want install to go easy and not spend a ton.

Thought? Advise?

[MJBaldwin]

To add ontop of this i just noticed that the cold lead and the sensor cannot be routed in the same conduit and the electrician only did one. what would your suggestion be there?

[PurpleFloyd]

I would use the self leveling concrete.

[MJBaldwin]

Has anyone done this before?  I have read a ton of things some say you need to add an additional layer like durarock and then lay infloor heat over that.  Others say use a primer on the OSB and lay your infloor heat above that and pour the Self Leveling Concrete to be embedded in this. All of which would be topped with tile.

Any advice would be great!