Product Description

Tremco Acoustical Sealant is a single component, non-skinning, non-hardening synthetic rubber sealant.

Basic Uses

Tremco Acoustical Sealant was developed for acoustical sealing of drywall partitions, corridors and party walls. Also used as a lap joint and perimeter sealant for polyethylene vapor barriers over fiber glass batt or other insulations. May be used in contact with polystyrene.


The application of Tremco Acoustical Sealant greatly increases the Sound Transmission Class (STC value) of a system and reduces the decibel level when one or more beads are applied to a joint. See edge details.


Quart (850 mL) cartridges and 10.1 oz (300 mL) cartridges

Applicable Standards

Conforms to Canadian CAN/CGSB 19.21 M87 (QPL #60963-H)


Dark Gray 

Coverage Rates 

27 linear feet of joint per quart cartridge for 1/4” x 1/4” joints. For specific coverage rates that include joint size and usage efficiencies, visit our website usage calculator at www.

Surface Preparation

For good adhesion, the joint interface must be sound, clean and dry. Any surface damage, dirt, dust, loose particles or other contaminants which may inhibit adhesion shall be removed from the surfaces prior to the application of the sealant.


Priming is not required.


Sealant is used in the design and construction of drywall partitions between individual residential units and along corridor walls. In the application, the sealant must inhibit air movement and buffer vibration, both of which contribute to sound transmission.

Tremco Acoustical Sealant is easy to apply with conventional caulking equipment. Apply bead onto substrate and cover within 24 hours to prevent tracking and dirt pickup that may inhibit adhesion.

Clean Up

Excess sealant and smears adjacent to the joint interface can be carefully removed with xylene or mineral spirits. Any utensils used for tooling can also be cleaned with xylene or mineral spirits.

Cure Time

Tremco Acoustical Sealant does not cure or dry. It is a non- skinning, non-hardening formula that will remain glutinous to further aid in decreasing sound transmission.


• Do not apply to damp or contaminated surfaces. • Use with adequate ventilation.