For the walls surrounding the living room fireplace, Cobb specified high-volume fly ash concrete made with 

a by-product of burning coal in power plants that usually ends up in landfills.  Search “Materials-for-Consideration.html” from A Sustainably Built Weekend Home

Search “Materials-for-Consideration.html”

For the walls surrounding the living room fireplace, Cobb specified high-volume fly ash concrete made with

a by-product of burning coal in power plants that usually ends up in landfills.