Pole barn floor perimeter insulation

[ITSWILL]

Ok so how do I do this?

I'm thinking just surround the perimeter with 4 x 8 sheets on their side. Will it go between poles or on the inside?

I'm guessing I will need a trencher, but I have never used one before or done anything like this.

Can it be trenched after the building is up, or should it be done even before the posts go in?

Thanks in advance.

 

[Highbeam]

So you have foam under the slab laying flat. Then on the sides, why is it that you want to run the foam any deeper than the slab? COmpletely surrounding the foam with 2" foam is all I did. Maybe you have some bizarre frost heave condition?

 

[CARS]

A friend of mine went down 2' around the perimeter. He used a skid loader for everything he could and did the rest with a shovel.

I agree, 4' isn't going to do much more and is going to be a lot more work.

 

[Rookie2]

i went around the inside after building was up. 18" -24". keep the floor inside only and concrete between the poles.

 

[ITSWILL]

Ok, that all makes sense, I think I was getting confused with another method where only the perimeter is insulated and the groundt is heated as a thermal mass. In that case you would want to go below the frost line.

 

[NWOhioChevyGuy]

Itswill, yes that is another method, I have a buddy that did this in Michigan and swears by it.

 

[trbomax]

Ok, that all makes sense, I think I was getting confused with another method where only the perimeter is insulated and the groundt is heated as a thermal mass. In that case you would want to go below the frost line.

Thats the way mine is.I put 2" blue board 3' deep around the outside before I poured the footer, but only poly film under the slab.. The winters up here are pretty brutal,water lines at 4' will freeze,but my shop floor will get no colder than 50 deg. and the floor drains never freeze.I only run heat when I'm there working.In the summer the whole shop stays cooler too,because the floor mass stays at 55 -65 deg. max.