Put insulation between the gravel and the wire mesh
Styrofoam sheets are
fine but will break up and crack when you walk on
and when they are pouring the concrete!
Barrier™ under concrete thermal insulation (Available here!)
comes in rolls and is flexible
with an included vapor barrier!
After laying down the 6" wire mesh, use wire ties to
attach the Pex Pipe,
so it does not float to the surface
and ruin your finished floor!
Ready to pour!
UNinsulated BARE PEX pipe for use insice a home in heated air
space to make connections to the insulated Pex to SAVE MONEY!
Can also be run between different heat exchangers with in a
building or to get to and attic furnace.
This is also used for in-floor radiant heating plus slab radiant
heating with 1/2" Bare Pex.. (Oxygen barrier recommended)
Smaller piping is much easier to install!
It can be purchased for as low as $39.00 a 100 foot roll (.39
per foot/ non-barrier)