Well-known adhesive brand Liquid Nails adds an acoustical sealant to its lineup of products. An elastic sealant designed to reduce sound transmission in various types of wall systems, the product is made with low-volatile organic compounds, has low odor, and can be cleaned up with water. It’s nonflammable and adheres to most surfaces. Akzo Nobel Paints. 800-634-0015. www.liquidnails.com.