Homasote DesignWall 440 Sound Barrier Panel - 4'x8' Fabric-Wrapped, Tackable

Homasote Sound Barrier Panels - DesignWall 440 Tackable Sound Barrier A fabric-wrapped Homasote 440 board that adds mass to a wall and gives you a full bulletin board surface. Its job is blocking sound between rooms, not absorbing echo inside a room. In Homasote's tested steel stud wall assembly (studs 24 inches on center, 3 inch sound batts, 5/8 inch gypsum both sides) it reaches STC 51 with panels on one side, and STC 53 with panels on both sides of that same stud wall assembly. Every performance number on this page is quoted from Homasote's own documentation, and those documents are linked below so you can check them. Installation guide: Hang panels on the wall with Z-clips (PDF) Buying this for echo control would be a mistake. Its NRC is 0.20, so most sound hitting the face reflects ba

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