Sheep Wool Sheep wool insulation works just like the animal’s fleece — it traps air, balances humidity, and stays fluffy over time. A natural way to keep your walls “breathing”. Supply chain in Ireland: Emerging Characteristics Advantages Excellent acoustic insulation Excellent thermal insulation Vapour-permeable and moisture-regulating Biodegradable Disadvantages Possible odor or allergen Limited availability Expensive Can shift if not secured Possible Building Elements Internal Wall Insulation Facade Cavity Wall Insulation Facade Under Rafter Insulation Roof Floor and Ceiling Insulation Floor