6dB most effective SheetBlock-Plus sound barrier helps in decoupling floors and walls. Act as thin, dense sound barrier layer in walls, ceilings or floors. Used as one component of a multi-layered construction scheme. Harder-to-work-with applications (such as ceilings) require an adhesive to temporarily mount the product until the finishing layers can be assembled. That’s where SheetBlok-Plus comes in. It comes with a pressure-sensitive adhesive which temporarily holds the SheetBlok in place, allowing you to apply the next layer (drywall, etc.). Available in black and clear. SheetBlok and SheetBlok-Plus act as a thin, dense sound barrier layer in walls, ceilings or floors. They help block sound transmission and also serve to help decouple (physically isolate) a room, which results in improved acoustics (especially low-frequencies) within the room.