Sound Acoustic Solutions

Installation Instructions - SilentPutty Pads

SilentPutty Pads [AC-SP77] are UL classified for both plastic and metal outlet boxes. Give your acoustical system leak seals with SilentPutty leaking seal.  This leaking seal is also known as fire putty, preventing the spread of smoke, fire, and toxic gases in the event of an emergency. Fire putty seal materials are sized to cover standard outlet boxes. Use fire putty to improve the soundproofing of fire-rated walls. Putty leaking seal materials are both effective and easy to install!


  • Remove the release paper from the Pad
  • Starting at side of the box, align the SilentPutty to front edge of box and fold around back of box, and seal onto the stud
  • Slit pad edges as needed to reshape & seal around conduits or wiring
  • Pinch together the extra material at the corners
  • Fold the pleated corners into place and firmly contour the SilentPutty into place to cover and seal airtight the entire surface of the outlet box
  • If installing pad before drywall (as pictured), form a lip where wallboard cutout will meet the pad.  Once wallboard is attached, fill gap around box front opening with acoustical caulk.
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Installation Instructions
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