Straw
Densely packed straw stalks store air between their fibers, creating an effective, affordable, and renewable way to insulate walls.
Characteristics
Advantages
Vapour-permeable and moisture-regulating
Excellent thermal insulation
Often sourced from by-products
Cost-effective
Disadvantages
Sensitive to moisture if unprotected
Bulky to transport and store
Limited load-bearing
Can shift if not secured