[Greenbuilding] fire temps vs flame temps

[Michael Smith]

Lightning temperatures reach 30,000 degrees C..... 3 times hotter than the sun? 
  I have researched dome construction and using high density foam for vertical (wall) R-44 ratings and sloped walls and roof areas R-66 definitely reflects the temperature rise in a fire. I will find this info and end the argument here. I thought everyone would want to know the hazards to avoid in super foam.