Sheep Wool Insulation Comfort RollsApplications of Comfort Sheep Wool Insulation The Comfort Sheep Wool Insulation is designed to be applied between and over rafters in floors and ceilings (ie laid horizontally). The Comfort Insulation is quite loosely felted at 14kg per cubic metre so its no good for vertical applications. The benefits of wool insulation Wool as insulation helps to reduce energy costs and prevents the loss of energy to the external environment (just like our Chimney