What is the r value of sand bag walls?

The R-value of sandbag walls typically ranges from 1 to 2 per foot of thickness, depending on the density and moisture content of the sand. This means that a wall made of sandbags will have relatively low thermal resistance compared to more insulated materials. However, sandbags provide other benefits, such as structural stability and protection against flooding. For improved insulation, additional insulating materials can be incorporated alongside sandbag walls.