Byeotjib protects residents from the sun in summer and keeps them warm in winter because it is empty inside.
Rice straw roof.
The roof tiles are made exactly as they were 500 years ago.
The amount of time effort cost and embodied energy in such a task seems to me to heavily outweigh the benefits.
Straw bale is one of the few natural products that we can build with in.
And as swearingen pointed out rice straw is an annual crop compared with 50 to 100 years for trees used in building.
Why use bales as a roof insulation.
The demand of straw as animal feed also reduced drastically due to reduction in numbers of draught animals in rural areas and the wide spread use of farm machineries.
Byeotjib rice straw roof.
Put into molds fired with rice straw in brick kilns for at least 40 days and imprinted with a chrysanthemum by hand.
With transformation of economy the use of rice straw for roof thatching has reduced substantially.
If two string bales yield an r value of r 40 debated by the way across the 18 direction then one.
Moreover rain falls down well and hardly soaks through a roof because it has a relatively smooth surface.