Acoustical Sound Sealant (AS-825)

This elastic, durable latex acoustical sealant is formulated to help provide sound deadening in all types of wall systems. It's non-flammable and adheres well to most construction surfaces.


sound deadening LIQUID NAILS® Acoustical Sound Sealant

Key Features

  • UL classified - R27050
  • Provides sound deadening
  • Remains flexible
  • Water clean-up
  • Non-flammable
  • Very low odor
  • VOC-compliant

Recommended For:

wood, oriented strand board, steel studs, brick, foamboard, gypsum board, particleboard, concrete, plywood, insulation board, cement board, drywall, concrete masonry units (CMUs), greenboard.

NOT Recommended For:

water immersion conditions, sealing around PVC piping, use between non-porous surfaces, plastics.

Available Sizes

  • 28 fl. oz. cartridge


  • 28 fl. oz. cartridge covers 86 lineal ft.


34 GPL


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Surface Preparation

Surfaces must be clean, dry and free of loose material before applying this acoustical sealant.

Product Application

Cut nozzle to provide 1/4" (6mm) opening. Puncture seal inside spout and insert acoustical sealant cartridge into caulk gun. Apply 1/4" (6mm) beads under runners at the ceiling and floor. For optimal sound deadening, acoustical sealant should also be applied to all openings, including cutouts, electrical boxes, perimeter joints, and other areas where sound transmission and air infiltration may occur. For further reference, see ASTM C 919 Standard Practice for Use of Sealants in Acoustical Applications.


For wet acoustical sealant, use water. For dried acoustical sealant, scrape first, then wipe using a cloth dampened with mineral spirits.


This acoustical sealant contains organic solvents which may cause adverse effects to the environment if disposed of improperly. Place empty acoustical sealant containers in normal refuse for disposal. Contact your sanitation department or household hazardous waste coordinator for information concerning possible reuse or disposal of unused solvent-containing adhesives and/or sealants.

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