Timbercrete contains more than 50% by volume of recycled sawmill waste. Timbercrete homes consume less energy for heating/cooling. Timbercrete acts as a ?carbon sink? preventing the release of carbon dioxide from decomposing sawdust into the atmosphere, thus reducing greenhouse gas omissions. Timbercrete® blocks are typically larger but lighter, and because of its load-bearing capabilities can also achieve a walling system without timber or steel frames.