Second post, Converting a banked barn in to a house, here in Ontario. I've a 22" stone foundation on solid rock bed. On buried side We added a 6" concrete direct contact pour to this. (A requirement from our engineer). Now we have tar coat done. Question I have is dimple membrane before or after R20 foam insulation.

"6" concrete direct contact pour"
is this the floor? Poured directly onto the ledge? Or is this a vertical wall poured against the stone foundation?

If it's a concrete wall, you want the foam directly against the concrete. Not sure what the purpose of the dimple membrane is? And where exactly is the tar if the exterior is a stone wall?

Again thank you.

Ok again not great with terminology. 6" concrete with rebar poured directly against wall. In essence I've now got 28" wall concrete on outside. Contractor has tarred this concrete and now scratching head on which order of install. Foam first as you say direct to wall or dimple (delta ms) first? This wall will be back filled to sill hight as soon as it's ready to do so.

I hope

so the concrete is on the outside? And you are using dimple board for drainage?

did he use a foam compatible tar? You'll need to use EPS or XPS in contact with the ground, but asphalt will disintegrate them. Foam over dimple board doesn't do much good as you'll get air in the dimple board which will negate any insulation features of the foam. So, assuming you used a compatible coating, the foam goes directly against the concrete.

Thank you Bob, learning something new here.. Will be checking product labels as soon as I'm back out on site. Scares me that my waterproofing might kill my insulation.

I too live in Ontario, 1 hour east of Toronto, doing exactly the same renovation. Bought a 100 year old bank barn, converting to a house. I have learned I need to insulate to exterior foundation. I was planning on using 4" of SM blue or similar insulation, up against the rubble foundation, taped and sealed, down 4 feet then 2 feet out, with new Big "O" drainage pipe and stone under that. Then, Delta MS covering all of that, then back filled. I will use SIPs as my wall insulation, so I will run exterior sheathing down to grade level. Where my foundation is exposed, I will make that "beautiful" with either parging or my exterior siding used elsewhere on the house.
Thoughts?

Is tar part of a Green Build? Even back before all this Green stuff, taring the foundation was one of the first things I thought should go away for a better building site.

Since I had ICF, my rigid foam was "pre-installed". We painted on a water-based latex "primer" which facilitated adhesion of the peel-and-stick waterproofing membrane. Then, the dimpleboard and a backfill that drained.

Hi slbert, I'm building out in Prince Edward County, you'll have fun with the smdelta we ended up getting extra long tap cons to aid mounting. And rebated and poured concrete on ruble/ huge boulder footings that we had exposed.

Good point ICFHybrid,
Not green as far as I can tell..
But it was already on the wall.

We spent the last few days putting it all together correctly and I think it's done well.
Ended up with this.

6" pour on new extended footing totalling 9 ft from grade
Waterproofing
R20 insulation seams sealed and taped
As we had it we mounted the dimple membrain over this.
Big o then gravel and sand up against the wall.

Big o around perimeter of building, on 3 exposed shallow walls we buried sm insulation horizontally shallow frost protection. Bed rock is only 18-24" here.

As we had quite the trench opened up we installed two 1500 gallon Roth cisterns for rain water harvesting.