So TonyP an Andrew
Finally my insulation is here .
so here is what i have I have that came with the greenhouse 4mm double walled polycarb . An now I have 6mm ½" thick bubble insulationon the roof an east side as well as the south side .
The north wall an the west wall are lined with double sided reflective insulation. Heater set at 60º .
Of course this is only the first night but i will give you a better update by sunday night .