Properties depend on type of fungus used and where they are grown.[1] Additionally, fungi has an ability to degrade the cellulose component of the plant to make composites in a preferable manner.[2] Some important mechanical properties such as compressive strength, morphology, tensile strength, hydrophobicity, and flexural strength can be modified as well for different use of the composite.[43] To increase the tensile strength, the composite can go through heat pressing.[3] A mycelium composite made out of 75 wt% rice hulls have density of 193 kg/m3, while 75 wt% wheat grains has 359 kg/m3, which shows how different mycelium substance has effect on its property.[3] One the methods to increase the density of the composite would be by deleting a hydrophobin gene.[43] These composites also have the ability of self fusion which increases their strength.[43] Mycelium based composites are usually compact, porous, lightweight and a good insulator.