Section 09 21 16
SOUND DAMP2 CONSTRAINED-LAYER DAMPING COMPOUND
PART 1 GENERAL
1.01 SECTION PERAMETERS
A. Sound Damp2 constrained layer damping compound for wall, floor and ceiling sheathing.
B. Interfacing with all trades and services having to with the construction of the room’s envelope.
1.02 RELATED SECTIONS
A. Section 09120 – Suspension Framing/Furring for Plaster/Gypsum Board Assemblies
B. Section 09200 – Plaster and Gypsum Board
C. Section 07920 – Caulking
D. Division 15 Sections – Mechanical Work
E. Division 16 Sections – Electrical Work
F. Division 17 – Audio, Data, Telecommunication Work
1.03 ALTERNATES
A. Prior Approval: Proposed substitutions for products in this section may be submitted to the architect and acoustical consultant no later than then (10) working days prior to bid due date. Substitutions shall only be considered if submitted with complete NVLAP accredited acoustic data and installation application information.
1.04 REFERENCES
A. Local Building Code – Current Edition
B. American Society for Testing Materials (ASTM) E-90-09 Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements for Wall, Ceiling and Floor assemblies.
1.05 SYSTEM DISCRIPTION
A. Design Requirements: Constraint layer damping using a viscoeleastic compound to control structureborne sound vibrations. This technology uses force bending waves to induce shear-deformation within the compound. The cyclic deformations occurring in the compound accelerate energy lose through damping in the form of heat dissipation.
1.06 PERFORMANCE REQUIREMENTS
A. Sound Transmission Loss Values rounded to the nearest decibel for the frequencies required in ASTM E90-09, tested by an accredited NVLAP facility.
B. STC 53 Specimen: 8ft. x 12ft. double wall assembly comprised of 5/8” gypsum, R-13 batt insulation, 2’x4’ wood studs n 24” centers. 55-60 oz. of Sound Damp2 compound between the two gypsum layers per 32 sq/ft, both sides.
Frequency (Hz.) Sound Transmission Loss (dB)
80 20
100 22
125 31
160 41
200 39
250 43
315 46
400 49
500 53
630 55
800 57
1000 56
1250 56
1600 56
2000 55
2500 58
3150 62
4000 64
5000 62
C. STC 50 Specimen: 8ft. x 12ft. wall assembly comprised of (1) layers 5/8” gypsum on the receive side, (2) layers 5/8” gypsum on the source side, R-13 batt insulation, 2’x4’ wood studs on 24” centers. 55-60 oz. of Sound Damp2 compound between the two gypsum layers per 32 sq/ft.
Frequency (Hz.) Sound Transmission Loss (dB)
80 16
100 25
125 32
160 37
200 37
250 42
315 41
400 45
500 48
630 51
800 53
1000 55
1250 56
1600 55
2000 49
2500 50
3150 55
4000 58
5000 58
1.07 QUALITY ASSURANCE
A. Qualifications: Manufacturer and installation contractor shall have a minimum of three years of professional trade experience.
B. Acoustical Characteristics: Product shall be tested by accredited NVLAP facility according to ASTM E90-09.
C. Pre-Installation Meeting: Contractor shall organize and conduct a pre-installation meeting with all associated trades to coordinate conditions regarding the room envelope, including materials which penetrate and/or fasten to the shell for the purpose of mitigating sound and vibration.
1.08 DELIVERY, STORAGE AND HANDLING
A. Deliver and store in Kinetics original and unopened packaging with product nomenclature clearly marked on the packages.
B. Store sealed in a cool area away from direct sunlight.
C. Handle heavy containers with caution.
D. Wear skin, eye and respiratory protection when applying.
E. Dispose of packaging materials in a safe, environmentally responsible manner according to instructions dictated by the general contractor, local ordinances or codes, and the Environmental Protection Agency.
1.09 PROJECT CONDITIONS
A. Be sure the working area is well-ventilated and/or wear a NIOSH approved respirator.
B. Apply between 40-120◦F (5-49◦C).
PART 2 GENERAL
2.01 MATERIALS
A. Kinetics Sound Damp2 (supplied by Kinetics)
B. Sheathing and fasteners (supplied by others) per Specification ______.
C. Perimeter Resilient Isolation Pad?
D. Acoustic Sealant
PART 3 EXECUTION
3.01 INSTALLATION
A. Installation of all sound and vibration isolation materials specified shall be accomplished following Kinetics and/or the Design Team’s written instructions. Installation instructions shall be submitted to the Design Team for approval prior to beginning work.
B. The installing contractor shall carefully examine conditions at the job site before commencing specified work. Any surfaces not properly prepared to receive work of this section shall be reported to the Design Team’s representative and work shall not commence until conditions are satisfactory.
C. Directions
1. Clean all surfaces free of dust & debris. Surface must be smooth and free of obstructions, such as nails, excess joint compound, etc.
2. Install first layer of wall/ceiling/floor sheathing or gypsum board per material manufacturer’s installation instructions.
3. Use acoustic caulk to seal around all cut-outs.
4. Prepare second layer of material for any cut-outs and clean back surface of dust & debris.
5. Stagger all sheathing or gypsum board seams.
6. Apply Sound Damp2 over back of second layer with bucket trowel or putty knife. Evenly distribute approx. 55-60 oz. per 32 sq/ft of wall/ceiling/floor area.
7. Using a short nap paint roller cover, roll to a thin continuous layer.
8. Fasten Sound Damp2 treated layer of sheathing or gypsum board (per manufacturer’s instructions) over first layer area within 10 minutes of application, sandwiching Sound Damp2 between the layers.
9. Apply acoustic caulk to seal around wall and/or ceiling perimeter and penetrations.
10. Clean up with warm water.
END OF SECTION