The document discusses the thermal and hygrothermal properties of Hemcrete, including its low thermal diffusivity and ability to buffer changes in humidity. Hemcrete has a thermal inertia similar to high thermal mass materials and allows walls to feel cool, while keeping interior environments comfortable. Hemcrete also has very low air permeability and does not experience significant thermal bridging through timber frames. Testing has shown Hemcrete walls can withstand fire for over 90 minutes.