What Is Builder Cleaning and Why Fine Dust Sticks to Painted Walls Builder cleaning refers to the final cleaning process that occurs after construction or renovation work. Construction activities produce fine particulate dust. This dust contains gypsum particles, cement residue, silica fragments, and timber fibers. These particles become airborne during sanding, cutting, and drilling. The particles eventually settle on interior surfaces, including painted walls. Gyprock and plasterboard surfaces...