Interior walls are primarily used to divide rooms and spaces and to distribute loads.

Interior walls may or may not be constructed as load-bearing walls. Load-bearing walls may carry higher loads when built with a wall thickness of only 11.5 cm. Visually, whether installed as finish masonry or coated with plaster, interior walls of sand-lime brick offer multiple design possibilities.

Sand-lime brick interior walls meet the toughest noise protection and fireproofing requirements. Due to their high thermal storage mass, they contribute significantly toward insulating against heat gain in summer.