Wanna see how I hope to knock $27K off my Earthship’s roof?
Regular Earthships use 2 layers of 4 inch Poly Iso Insulation, tongue and groove decking and metal roofing. This method costs well over $8 per square foot in materials.
If my experiment works – this straw bale roof will perform about as well and cost about $3.50. I built sample to evaluate if the model would sturdy enough to pass engineering muster, FYI – Crown Jade Engineering, really understands advanced building and my quest for economy.
This experiment started with a trip to Home Depot and the old feed store to see if I could bond planks to straw to metal roofing.