This specification is designed to enable the design professional or specification writer to
select the NRC value that best suits the project's requirements. Please edit the NRC value in
section 3.03 Line A.
PART 1 - GENERAL
1.01 Section Includes
A. SonaKrete™ acoustical finish system.
B. Subcontractor must provide manufacturer's written approval to bid project.
1.02 Project Scheduling
A. Clips, hangers, supports, sleeves, and other attachments to the substrate are
to be placed by other trades prior to the application of acoustical finish.
B. Ducts, piping, conduit or other suspended equipment shall not be positioned until
after the application.
A. Submit one copy of the manufacturer's ISO 9001:2000 Certification.
B. Submit 2 copies of the test reports indicating compliance with the following:
1. NRC values per ASTM C-423 conducted by a NVLAP certified testing laboratory:
2. Class 1 Fire Rating per ASTM E-84
C. Submit one copy of the manufacturer's written cerfication that the materials contain
no asbestos, fiberglass or other man-made mineral fibers.
D.Installing Contractor: submit copy of SonaKrete license as provided by the manufacturer.
E. Submit 2, 5"x7" samples (bearing the name SonaKrete) as provided by the manufacturer.
1.04 Quality Assurance1. Construct one field sample panel, 10'x10', to specified thickness to illustrate texture and color.
2. Prepare the sample using the same tools and techniques to be used for the actual applications.
3. Locate the sample where directed.
The applicator will inform the project architect when the sample is ready for review.
Do not start the actual application until the architect has approved the field sample.
A. The Manufacturer must be ISO 9001:2000 Certified
B. Installing applicator must be trained and certified by manufacturer.
C. Field samples:
1.05 Delivery, Storage and Handling
A. Deliver in original, unopened containers bearing name of manufacturer and product identification.
B. Store materials dry, off ground and under cover.
C. Protect liquid adhesive, sealers & additives from freezing.
1.06 Project Conditions
A. The air temperature in the room must be a minimum of 40°F and maintained until the material has cured.
B. The substrate temperature must be a minimum of 40°F.
C. The General Contractor to provide ventilation to ensure proper curing.
Part 2 - PRODUCTS
2.01 Acceptable Manufacturers
International Cellulose Corporation
12315 Robin Boulevard
Houston, Texas 77045
(713) 433-6701 or (800) 444-1252
FAX: (713) 433-2029
A. SonaKrete™ Acoustical Finish System
C. Water - Potable
D. Color shall be: white, arctic white or custom color
A. Examine the substrate surfaces and report unsatisfactory conditions in writing. Do not
proceed until unsatisfactory conditions are corrected.
B. Drywall substrates require a minimum Level 3 finish and are to be sealed with Iso-Prime.
C. Plaster substrates require a brown coat finish and are to be sealed with Iso-Prime.
D. Consult International Cellulose for other substrates.
A. Provide masking, drop cloths or other satisfactory coverings for materials/surfaces that are
not to receive acoustical finish.
B. Coordinate the installation of the acoustical finish with work of other trades.
A. Install to a thickness to achieve an NRC of ____
B. Install the acoustical finish according to the manufacturer's written instructions.
C. After achieving the required thickness and while still wet, float the material to match the
approved field sample.
D. Cure the material with continuous natural or mechanical ventilation.
A. Protect finished installation under provisions of Division 1.
END OF SECTION