An exposed single skin masonry wall such as a concrete tilt slab internally insulated with a DCT va-Q-vip vacuum insulated panel. The insulation much be fixed strictly in accordance with the install instructions so as not the damage or puncture the vacuum insulation. The ProctorGeo HC8-2G provides for protection of insulation from sharp surfaces or chemical reaction from the masonry wall. ProctorPassive SmartVap must be taped and sealed to form a continuous air and vapour barrier to the interior of the insulation preventing internal moisture vapour from condensing on the masonry at or below dew point temperature. This solution is often used as a compromise where external insulation is not an option. As the DCT va-Q-vip is deemed combustible, this solution can only ever be used in type A or B construction where approved as part of a fire engineered performance solution.