Siloxane compositions and methods for reducing VOC and siloxane dust

A method of manufacturing a gypsum product, the method comprising:

• preparing a gypsum slurry comprising a high-viscosity siloxane of 30 cps to 242 cps by mixing at least stucco, water, the high-viscosity siloxane, and at least one accelerator of siloxane polymerization;
• forming the gypsum slurry into a gypsum core of a gypsum product;
• allowing the gypsum slurry to set;
• and
• drying the gypsum product in a kiln;
• wherein a level of siloxane dust generated in the kiln during manufacturing the gypsum product is decreased by at least 10% in comparison to a gypsum product made with a low-viscosity siloxane of about 20 cps;
• and wherein the gypsum product is a gypsum-fiber board and the gypsum core of the gypsum-fiber board comprises at least one surface, and the method further comprises a step of coating a water-resistant coating on the at least one surface of the gypsum core.