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Coat of Silence™
Interior soundproofing materialSpray-On Sound Reducing Coating

Introducing Coat of Silence – the easy to use, spray on coating for all your interior sound reduction projects.
  • As Simple as Applying Paint
  • One Person Process
  • Consistency in Performance
  • High Degree of Sound Reduction
  • Reduce Noise Transmission
  • Cost Effective
  • Mold, Mildew and Water-Resistant
  • Class A Fire Retardant
The Coat of Silence sound reduction system is applied using a 2-step application process of two layers of “resilient” base coat followed by a “mass building” finish coat. By increasing mass while imparting reflective and absorptive properties, Coat of Silence reduces sound transmission through walls and ceilings. The Coat of Silence base coat layer retains resiliency over time and the durable finish coat is ready for the paint or wall covering of your choice.

The Coat of Silence brings a two step system that can be sprayed onto any existing surface or with new construction. A new proven soundproofing solution that keeps the noise out, the cost and labor down. Applications include hospitals, hotels, schools, condos, apartments, home media rooms, offices, retail centers, construction and many more.

View Frequently Asked Questions
Interior vibration mounts Interior sound control
STC RATING: 52
COLOR: White
DENSITY:
Base Coat – 9.45 ± 0.2 lbs/gal
Finish Coat – 9.85 ± 0.2 lbs/gal
DRY CONTENT:
Base Coat TNV – 64.28% (62 ± 2)
Finish Coat TNV: – 61.61% (62 ± 2)
CLEANING & DILUTION: Water
APPLICATION: Sprayed
APPLY TEMPERATURE: Between 50°F and 90°F
SPRAY NOZZLE SPECIFICATIONS: A 317 tip is recommended
COVERAGE:
Base Coat – One gallon covers approximately 100 sq ft
Finish Coat – One gallon covers approximately 100 sq ft
Example: A job requiring 500 sq ft of coverage would require 10 gallons of product, 5 base coat and 5 finish coat.
LENGTH OF STORAGE: Original, unopened containers may be stored up to 12 months. Open, unused material should be disposed of after a 6-month period.
FLAMMABILITY: Flame Spread: 15; Smoke Developed: 10

Easy To Use

The Coat of Silence sound reduction system is applied using a 2-step application process of two layers of “resilient” base coat followed by 1-2 layers of “mass building” finish coat to reach an ideal thickness of 25-35 mils. We recommend only those with commercial/airless spray application experience, or painting/coatings professional, attempt to apply this product.
Interior acoustical panels
  1. Step One: After priming your surface, two coats of Base Coat is recommended for best sound reduction results.
    • Because of the product thickness, stir thoroughly with drill or paddle.
    • Because a membrane is created, spray an ample coat without running.
    • To effectively achieve thickness of product, do a vertical and horizontal pass for each layer.
    • For best performance, wait 20-40 minutes between layers, or until product is dry.

  2. Step Two: Two coats of the Finish Coat is recommended for best performance.
  3. It can be painted over by any kind of paint, including latex & enamel.
    • Because of product thickness, stir thoroughly with drill or paddle.
    • Apply an even coat to ensure a consistent finished surface.
    • To effectively achieve thickness of product, do a vertical and horizontal pass for each layer.
    • For best performance, wait 20-40 minutes between layers, or until product is dry.

  4. Application: An airless sprayer with a 317 tip and 1,800 to 2,400 psi is recommended. Be sure to clean the sprayer using soap and water within 30 minutes (after last use) or the material will begin to set inside the sprayer.

    Please note: the dampening ability of the material is not affected by application method.

  5. Clean Up: Clean up can be done with soap and warm water.


Below is a video showing the finish coat (white) being applied over the top of finish coat (grey).

Cost Comparison
QuietRock Acoustiblok Coat of Silence
QuietRock Sheet AcoustiBlok Membrane Base & Coat Finish
Requires replacement of existing drywall Required rehab to add the membrane Done on any existing wall – no extra labor required
2 Tradesmen 1 Person, Paint Spray Skill Set
Cost
$5.86/SF*
Cost
$14.31/SF
Cost
$2.80/SF
Walls still need to be primed & painted Wall is finished in white, or paint color of choice
Comparisons based on a common wall 10′×12′ room with 5/8″ pre-existing wall (480 square feet)
*Does not include extensions of trim, jams & electrical to accomdate thicker walls.
Significant Sound Reduction
With the Coat of Silence two coat process, mid range sounds become contained. Common noise is greatly reduced. We have reached an industry high – even the test labs were a buzz. To date, no other sound reduction solution can deliver with the consistency of Coat of Silence. Manufactured at the same high quality as major paint manufacturers.

Our patent-pending Coat of Silence resilient layer (base coat) is scientifically formulated to deflect sound transmission with a 52 STC rating. The base coat forms nano membranes that create sound absorbing and sound deflecting barriers. Our Finish Coat has the same sound deflecting formula to complete the sound reduction system.

No other sound reduction process offers such results with so little work. It’s tested in accordance with ASTM E90-09 and E413-04 as well as UL tested. Underwriter Laboratory has been testing products and helping to define standards for more than 75 years and they evaluate more than 19,000 types of products, components, materials and systems a year. With these testing standards, you know Coat of Silence silences the competition, as well as the room.
Coat of Silence – Sound Transmission Loss (dB) per Octave Band (Hz)
  125 250 500 1000 2000 4000 STC
Coat of Silence 32 44 50 54 53 54 52