Thin layer of sand for level floor

[Baccala65]

I have a 6" vermiculite/portland insulating hearth poured has anyone ever just put a fine layer of sand down on top of the insulating hearth and just set the floor on that?

[Baccala65]

Re: Thin layer of sand for level floor

Just did a search on here and found my answer, should have done this in the first place, onto laying bricks.