Typically, the majority of mid-rise wood construction is composed of opaque wall assemblies. The split-insulation wall assembly with ROCKWOOL stone wool products is an example of an opaque wall assembly and provides excellent, long-term thermal resistance to meet the increasing demands of North American energy codes.

ROCKWOOL CAVITYROCK® continuous insulation, reduces thermal bridging and greatly improves the overall thermal performance of the wall. Stud cavity insulation (ROCKWOOL COMFORTBATT®) further improves the wall thermal performance and will not sag or change shape over time.

When installed in a rainscreen assembly, stone wool insulation allows water vapor to travel through the wall assembly. Incidental moisture is able to dry to the outside of the insulation and be removed as the insulation is highly vapor permeable. Moisture will not compromise the stone wool insulation as it is inorganic and will not decay or corrode in the presence of water.

Stone wool insulation will also limit the spread of smoke and fire and is non-combustible, providing critical time for occupants to escape.