SPC Solution 1 – Soundproof Ceiling

Soundproofing Ceiling - Double Green Glue

Two extra layers of 5/8″ drywall + two Green Glue damping layers on existing ceiling


This solution adds an additional TWO layers of standard 5/8” drywall to the existing drywall or plaster ceiling. This make the ceiling quite a bit more massive (an additional 8 pounds per square foot) and again utilizes standard $12 drywall. Install a medium coverage of Green Glue between layers. This will damp more vibration than a single layer of Green Glue, but still not all, since the vibration is still racing through the framing (joists) above the new drywall layers, with some of this energy still available to enter your ceiling as well as walls.

Ease and Cost

  • Inexpensive
  • Simple and Fast Installation
  • One remaining issue is accurately finding the existing joists


SPC Ceiling Solution 2 is chosen by customers about 40% of the time. It is our single most common choice. It does not address the vibration that remains in the subfloor and joists overhead, however there is a great deal more thoroughly damped mass than the original ceiling had. While this solution does not reduce the vibration that may flank from the upstairs floor directly into your walls, it is an effective means to simply and inexpensively reduce considerable airborne noise and a good deal of the impact noise.

This method adds Mass and Damping, two of the 4 Elements of Soundproofing.

Additional Ceilings
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