Hemp Made from the fibrous stalks of the hemp plant, hemp insulation traps air naturally — keeping your home warm in winter and cool in summer. Available as mats or boards. Supply chain in Ireland: Emerging Characteristics Advantages Excellent acoustic insulation Low susceptibility to fire Vapour-permeable and moisture-regulating Biodegradable and recyclable Disadvantages Sensitive to moisture if unprotected Needs chemical treatment for safety Expensive Possible Building Elements Internal Wall Insulation Facade External Wall Insulation Facade Under Rafter Insulation Roof External Rafter Insulation Roof Floor and Ceiling Insulation Floor Roller Shutter Insulation Window