Acoustical Sealant

Noiseproofing Acoustical Sealant is a non-flammable/water-based sealant designed to reduce sound transmissions in soundproof walls, floors and ceilings assemblies.

When building a soundproof room, you need to seal any openings and gaps to achieve and maintain a high performing STC (Sound Transmission Class) value. Noiseproofing Acoustical Sealant will remain flexible for decades and easily cleans up with soap and water.

Acoustical Sealant remains flexible and adheres firmly to wood, metal studs, concrete, gypsum board and most other building materials. Field tested and field proven, Acoustical Sealant is recognized by drywall contractors and architects as an effective means of sealing sound leaks.

Acoustical Sealant Coverage:

1/4" bead85 linear feet per tube
3/8" bead40 linear feet per tube


  • Water based, non-toxic, no VOC
  • Water clean-up
  • Low odor
  • Paintable and muddable
  • Freeze / thaw stable
  • Exceptional properties including edge damping
  • No volatile components ensures long term flexibility

Technical Specs

  • Tubes per Case: 12
  • Tubes Size: 28 oz Tube
  • Case Weight: 34 lbs
  • Description: Water based, non-toxic, no VOC
  • Cleanup: Water clean-up
  • Odor: Low odor


Installation of Acoustical Sealant is optimal when temperatures are above 55 ºF (13 ºC). Provide adequate ventilation to carry off excess moisture. Surface to be sealed must be clean, dry, and free of dust.

Use a standard contractor size caulking gun. Apply 1/4” gap, or else there will be shrink. Sealants are generally optimized for larger gap (inflexible), or for smaller gaps (flexible). Ours is flexible, so 1/4” is the max gap.

Apply continuous beads of sealant around all openings formed for outlets, lights, etc.