Lepage GreenSeries Draft & Sound Interior Sealant is a latex-based sealant designed to reduce sound transmissions and drafts in wall systems where a sound-rated assembly is required. Its primary function is to achieve and maintain the specific Sound Transmission Class value of the system designed. This versatile and durable sealant is great for professional and amateur jobs alike, since it bonds to most building materials, including wood, metal studs, concrete, gypsum board, and more. It won’t harden, separate, or crack over time either. Lepage GreenSeries Draft & Sound Interior Sealant is also non-flammable and environmentally friendly; it even qualified for LEED points and is GreenGuard Certified for Children and Schools. Our low-odour sealant is ideal for indoor projects, since it’s easy to clean with soap and water, thus eliminating the need for harsh cleaning chemicals.