insulating a slab with radiant heat

What is the proper method for insulating a concrete slab home with radiant floor heat?

yesterdays inspection has an exposed area of the exterior slab, insulation cut short… and it is melting the snow away from the home… heat loss? :roll:


Is that 1" of foam insulation showing above grade? I hope that its not the slab protruding out from under the siding.

2" rigid foam insulation that is not flush with the top of the slab… i will try to post another angle…

here is a different angle… and yes… no support for the door sill