With SonaKrete, Quiet Never Looked So Good.™
Premium Ceiling Acoustical Finish
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SonaKrete is a premium ceiling acoustic finish with a refined, plaster texture. SonaKrete is spray-applied, then troweled for a seamless finish, making it ideal for historic renovation and domed or arched ceilings. SonaKrete is specified in interior spaces to reduce excessive noise and improve intelligibility without compromising aesthetic objectives. Additionally, SonaKrete typically provides these features at a more competitive install cost than alternative acoustical plaster systems. SonaKrete is available in four standard and specially-matched custom colors.
Premium Acoustical Finish System
SonaKrete is composed of uniquely prepared cellulose fibers combined with natural fire retardants in a strict, quality-controlled manufacturing process to produce a Class 1, Class A-rated material.
SonaKrete is installed by an international network of professional contractors licensed by ICC. During application, SonaKrete is spray-applied in thin layers, and with each pass, troweled out to compress the product for a total thickness ranging from 1/4″ to 3/4″ thick. All edges are trimmed for a seamless appearance to adjacent surfaces or textures. The final result is a beautiful, hard finish, free from irregularities. For more information on our spray-applied seamless acoustical finish, contact us today!
Sound Control
SonaKrete reduces noise and reverberation that is present in interior spaces, significantly improving ambient sound quality and intelligibility without interfering with design goals.
SonaKrete’s superior acoustical performance is measured using the room reverberation method as per ASTM C 423 to calculate a noise reduction coefficient (NRC). At just 1/2″, Sonakrete achieves an impressive NRC of .65. This, along with a spray-applied and troweled application method, makes SonaKrete the perfect solution for historical renovation, concert halls, or any commercial project where aesthetics and acoustical performance are key.
CUSTOM COLORS AVAILABLE
SonaKrete is available in four standard colors and can also be specified in specially-matched custom colors. SonaKrete White and Arctic White provide high light-reflectance values.
Please contact us for more information on customizing your SonaKrete application.
Note: Color selection will affect the final price.
SUSTAINABILITY
SonaKrete is made from 80% Pre-Consumer Recycled Content and inventoried to 1,000 PPM in accordance with the HPD Collaborative.
SonaKrete is UL GREENGUARD Gold certified and compliant with LEED v4: Low-Emitting Materials, CDHP/ California Section 01350, SCAQMD Rule 1168, and CHPS- Acoustical Ceiling. Additionally, SonaKrete provides high light-reflectivity, superior acoustical performance, and may contribute to sustainable credit categories for green-building initiatives.
SonaKrete “fc” does not contain silica dust, asbestos, minerals, or glass fibers, or PCBs.
TECHNICAL DATA
ASTM Standards Compliance
- ASTM C 423 – Sound Absorption
- ASTM D 2244 – Light Reflectance
- ASTM E 84 – Surface Burning Characteristics
- ASTM E 736 – Cohesion/Adhesion – Bond Strength
ASTM C 423 - Sound Absorption (NRC)
SonaKrete on Solid Backing
| Inches | 125 Hz | 250 Hz | 500 Hz | 1,000 Hz | 2,000 Hz | 4,000 Hz | NRC |
|---|---|---|---|---|---|---|---|
| .25” | 0.01 | 0.07 | 0.39 | 0.69 | 0.83 | 0.87 | 0.50 |
| .375” | 0.06 | 0.11 | 0.46 | 0.77 | 0.84 | 0.89 | 0.55 |
| .5” | 0.01 | 0.16 | 0.49 | 0.89 | 1.03 | 0.97 | 0.65 |
| .75” | 0.25 | 0.48 | 0.81 | 0.85 | 0.85 | 0.94 | 0.75 |
All acoustical testing was performed by an NVLAP-accredited laboratory. Testing available on request.
ASTM D 2244 - Light Reflectance
| Standard Color | Light Reflectance Value (LRV) |
|---|---|
| Arctic White | 91+ |
| White | 88+ |
ASTM E 84 - Surface Burning Characteristics
SonaKrete has a Class 1, Class A fire rating per ASTM E 84, UL 723.
- Flame Spread – 10
- Smoke Developed – 5
ASTM E 736 - Cohesion/Adhesion - Bond Strength
SonaKrete: Bond Strength is greater than 800 psf
DURABILITY
SonaKrete is applied with a patented water-based glue that provides a resilient bond strength of
800 psf.
Unlike similar acoustic plaster systems, SonaKrete is extremely abuse-resistant. SonaKrete does not crack or spall with age, abuse, or movement from building components, which is often typical with cementitious or plaster-based materials.
SUBSTRATE COMPATIBILITY
SonaKrete adheres to properly prepared smooth substrates such as level 4 primed drywall and plaster, and conforms to curved ceiling configurations such as arches and domes.
Surfaces to receive SonaKrete are to be inspected prior to installation to determine if surfaces are acceptable.
TYPICAL PROJECTS
SonaKrete is typically used as an exposed ceiling finish to reduce excessive noise and reverberation and provide versatile color options. It is appropriate for interior spaces such as universities, courtrooms, ballrooms, theaters, and any project where aesthetics and acoustical performance are critical.
Please see our Projects Gallery for more examples of how SonaKrete can be customized to meet your project requirements.