School me on thermal breaking floor

[ct71rr]

Hello all, I'm getting ready (finally) to pour my garage floor. I would like to thermal break it. I live in Massachusetts (sorry ). From what I've learned on this forum, I should run rigid insulation along the inside of the foundation wall approximately 18" and then run rigid insulation on top of the vapor barrier (6 mil poly). The poly will be over approximately 8" of gravel/stone. I'm going to use 1" rigid foam for cost sake. I will be heating the garage. What is the best way to run the break along the door openings? I have three of them (9' each). I will be pouring a new apron, as well. Thanks in advance for any input

Chad

 

[ct71rr]

Bigitty-bump....anyone...Bueller....Bueller...Bueller??

 

[ConCretin]

I wish I had a photo or drawing but I hope you can follow this anyway. I ran 2" rigid around the perimeter between my slab and foundation walls. When I got to the garage doors, I ran the insulation straight across. This left a gap the width of the foundation wall, which I will use as a seat for an unheated concrete apron. I'll cover the exposed top of the insulation with a rubber garage door seal.

 

[ct71rr]

Thanks llwillysfan! That makes perfect sense. I was actually hoping you would see this thread .