Insulating a yurt roof

[TKOAK]

There is a Yurt Mfg. in Homer, AK, they build good Yurts. they make a insulated blanket from the same polyester we use in cold weather clothing. It costs about $1800.. (it think) I deiced to made my own 1 1/2 inch polyester quilt roof blanket.
I bought there rolls of house wrap and several rolls of tape. In my case a 30 x 30 ft square was taped together on the loft floor. (i.e. in the yard in the grass) the roof was laid out using geometry for a cone. Two pieces were made. I ordered 8 rolls of 1.5 inch poly

insulation

and glued it to the house wrap, trimming to fit the cone.. The top piece of house wrap was sprayed with glue and carefully laid on top of the poly and it all stuck together, We then went around the entire perimeter of the "blanket" and tape the edges every 16 inches. The result is a very nice roof quilt. It will be placed under the roof over the bubble/aluminum

insulation

. The people who have installed this blanket report good result. This year is my first time of having to provide my own heat in Alaska. It is a challenge. A gas 20,000 BTU vented wall heater and 1.5 inch pink foam insulation did not do the job in my Connex cabin. I had to install the wood heater.