Energy-efficient production with the use of waste materials is the focus of the research. A modern economy requires the production of materials to consider sustainable criteria. Therefore, the research limits the use of different materials to waste glass and soot as appropriate parts of a sustainable composition. There are several possible applications of glass-clay products in the construction industry- lightweight partitions and insulation materials. The most challenging part of creating a composition is to make a composition with predefined properties. The most significant are compression strength, volume weight, and porosity for the intended application. The research aims to analyze the influence of boric acid on a composition using boric acid as an additive. Volume weight was defined, and a compression strength test was performed to identify the most significant properties of the glass-clay composition. The results were analyzed, and a conclusion about using boric acid in the composition was formulated.