How to seal up--yurt platform/skirt details?

[hierony]

I am curious how others have sealed up their yurts to prevent drafts around the perimeter. I've seen a few photos here and there, but couldn't find much but sparse hints via searching the forums.

I have a traditional-style yurt, 6 m diameter (~20 ft). I used a circular straw bale foundation with 3/4" T&G OSB screwed into 1x3" rough-cut poplar laid flat running perpendicular to the sheet length--nice & stout, except where I missed a joint. I cut the OSB to 2-3" outside a 19.7' dia circle. I have a liner & heavy canvas and am currently working on getting some

insulation

(likely several layers of wool-blend blanket material if shipping isn't too expensive) with a layer of tyvek between the canvas &

insulation

. The lowest 18" of the canvas is plastic-impregnated, ~12" of which hangs below the OSB.

My main aim is to weatherize/seal up my yurt as best as possible while insulating so as to not have a horribly cold & drafty yurt like Bob :P

My question: what layers does your yurt have, does your platform have a lip/skirt that goes above the platform a little, which layers are inside/outside said lip, are any layers attached to anything & how?

Thanks & hope everybody's nice & warm,
Jeremy