The amount of time effort cost and embodied energy in such a task seems to me to heavily outweigh the benefits.
Rice straw roof.
Why use bales as a roof insulation.
Byeotjib rice straw roof.
Byeotjib protects residents from the sun in summer and keeps them warm in winter because it is empty inside.
Straw bale roof i simply must ask.
And as swearingen pointed out rice straw is an annual crop compared with 50 to 100 years for trees used in building.
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.
Put into molds fired with rice straw in brick kilns for at least 40 days and imprinted with a chrysanthemum by hand.
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.
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With transformation of economy the use of rice straw for roof thatching has reduced substantially.