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ROCKWOOL COMFORTBOARD 80 is a rigid stone wool continuous insulation board used as a non-structural sheathing product in residential construction. It is designed to provide increased thermal performance to the building envelope. Installing COMFORTBOARD 80 as continuous insulation with our ROCKWOOL COMFORTBATT as the wall cavity insulation contributes to a higher effective R-value wall system. COMFORTBOARD 80 is non-combustible, vapour permeable, water repellent and sound absorbent. It has also received ICC-ES validated product acceptance in accordance to IRC and IBC for the following uses: non-structural thermal insulation in non-fire-resistant rated dwellings; exterior parameter insulation around foundation; under flat concrete slab; a component of residential wood-framed cathedral ceilings; and in areas where probability of termite infestation is 'very heavy.'