Nearly 12000m2 of 100mm and 140mm thick lightweight Q-blocks were used by HD Construction for use in the conversion of a 9-storey building in Braamfontein to student accommodation. Specific attention was given to the block finish as the walls were unplastered and painted. Although lightweight walls such as dry walling is popular in commercial developments, they lack the robustness when used in residential refurbishments. For this reason, CemteQ’s lightweight concrete Q-blocks are an excellent choice for builders and construction professionals looking for a lightweight, durable and energy-efficient walling material that is also environmentally sustainable.