URSA Cavity Batt is a lightweight, semi rigid glass
mineral wool slab treated with silicon based water
repellent. It is suitable for use in both fully and partially
filled masonry cavity walls up to 25m high.
URSA Cavity Batt 32 has a thermal conductivity of
0.032 W/mK and URSA Cavity Batt 35 has a thermal
conductivity of 0.035 W/mK.