Sound isolation and dampening clip
Used to fasten gypsum wallboard in various wall and floor-ceiling applications, while simultaneously providing acoustical separation.
The ClarkDietrich Sound Clip™ (CDSC) is used in conjunction with 18mil (25ga) 7/8" deep drywall furring channel. It is used to fasten gypsum wallboard in various wall and floor-ceiling applications, while simultaneously providing acoustical separation. This significantly reduces the amount of airborne sound filtering from room to room. The ClarkDietrich Sound Clip increases the STC ratings in most assemblies while reducing sound transfer.
- Ideal for use in multi-family dwelling, hotels, theaters and hospitals
- Used in conjunction with 7/8" 25 ga Furring Channel with a total standoff from stud of 1-5/8"
- UL fire rated for most common assemblies
- Complies to UL 263 test standards. See full list of UL® design assemblies in UL R19331
- Maximum spacing 48" o.c. (laterally) x 24"o.c. (vertically)
- Maximum design load is 36 lbs.
- SOUND TESTING FOR TYPE X & TYPE C BOARDS
Product Data & Ordering Information
| Product code | Dimensions | Thickness | Yield Strength | Coating | Pcs./Ctn. |
|---|---|---|---|---|---|
| CDSC | 3" x 1-1/4" (Clip only) |
43mil (18ga) | 33ksi | G60 | 100 |
Design Loads
- Maximum spacing 48" o.c. (laterally) x 24"o.c. (vertically)
- Maximum design load is 36 lbs
Sound & UL Design
Complies to UL 263 test standards. See full list of UL® design assemblies in UL R19331
- Wall Sound Assemblies are tested by Intertek Building & Construction (B&C) or Western Electro-Acoustical Laboratories
- Floor Sound Assemblies are tested by Intertek Building & Construction (B&C) or Riverbank Acoustical Laboratories
- NVLAP Accredited for ASTM E90 & E413, ISO Certified
See test reports (in below links) for detailed requirements of construction of assembly.
CDSC Sound Assemblies on 2x4 Wood Studs
| Fire Rating | UL Assembly | Wall Framing | Stud Spacing | Wall Board (Side1/Side2) | Insul | STC Rating | OITC Rating | Test Report |
|---|---|---|---|---|---|---|---|---|
| 2x4 Wood Studs | 16"o.c. | (1) Layer / (1) Layer - 5/8" Type X | R-19 | 53 | TL18-201 | |||
| 2x4 Wood Studs | 16"o.c. | (1) Layer / (1) Layer - 5/8" Type C | R-19 | 60 | TL18-288 | |||
| 2x4 Wood Studs | 16"o.c. | (1) Layer / (2) Layer - 5/8" Type X | R-19 | 57 | TL18-204 | |||
| 2x4 Wood Studs | 16"o.c. | (1) Layer / (2) Layer - 5/8" Type C | R-19 | 61 | TL18-289 | |||
| 2x4 Wood Studs | 16"o.c. | (2) Layer / (2) Layer - 5/8" Type X | R-19 | 61 | TL18-205 | |||
| 2x4 Wood Studs | 16"o.c. | (2) Layer / (2) Layer - 5/8" Type C | R-19 | 62 | TL18-290 | |||
| 2 Hr | U301 | 2x4 Wood Studs | 16"o,c, | (2) Layer / (2) Layer - 5/8" Type X | R-13 | 60 | 47 | L3173.01-113-R0 |
| 1 HR | U309 | 2x4 Wood Studs | 24"o.c. | (1) Layer / (1) Layer - 5/8" Type X | R-19 | 53 | 37 | L3173.17-113-R0 |
| 1 HR | U311 | 2x4 Wood Studs | 24"o.c. | (1) Layer / (1) Layers - 5/8" Type C | R-19 | 55 | 39 | L3173.18-113-R0 |
| 1 HR | U340 | 2x4 Wood Studs - Chase Wall | 12"o.c. Staggered | (1) Layer / (1) Layers - 5/8" Type X | R-19 | 57 | 43 | L3173.21-113-R0 |
| 1 HR | U341 | 2x4 Wood Studs - Chase Wall | 24"o.c. | (1) Layer / (1) Layer - 5/8" Type X | R-19 | 60 | 45 | L3173.20-113-R0 |
| 1 HR | U344 | 2x4 Wood Studs | 24"o.c. | (1) Layer 5/8" Type X / (1) Layer 5/8" Plywood + 5/8" Type X | R-19 | 57 | 41 | L3173.19-113-R0 |
| 1 HR | U356 | 2x4 Wood Studs | 16"o.c. | 7/16" Plywood / (1) Layers - 5/8" Type X | R-13 | 51 | 34 | L3173.02-113-R0 |
CDSC Sound Assemblies on Metal Stud Framing
| Fire Rating | UL Assembly | Wall Framing | Stud Spacing | Wall Board (Side1/Side2) | Insulation | STC Rating | OITC Rating | Test Report |
|---|---|---|---|---|---|---|---|---|
| 3-5/8" ProSTUD 20 (33mil) | 24" o.c. | (1) Layer / (1) Layer - 5/8" Type C | R-19 | 60 | TL18-291 | |||
| 3-5/8" ProSTUD 20 (33mil) | 24" o.c. | (1) Layers / (2) Layers - 5/8" Type C | R-19 | 62 | TL18-292 | |||
| 3-5/8" ProSTUD 20 (33mil) | 24" o.c. | (2) Layers / (2) Layers - 5/8" Type C | R-19 | 63 | TL18-293 | |||
| 3-5/8" ProSTUD 25 (15mil) | 16" o.c. | (1) Layer / (1) Layer - 5/8" Type X | R-11 | 56 | TL18-199 | |||
| 3-5/8" ProSTUD 25 (15mil) | 16" o.c. | (1) Layer / (2) Layers - 5/8" Type X | R-11 | 60 | TL18-197 | |||
| 3-5/8" ProSTUD 25 (15mil) | 16" o.c. | (2) Layers / (2) Layers - 5/8" Type X | R-11 | 62 | TL18-197 | |||
|
2 Hr |
U411 | 2-1/2" ProSTUD 25 (15mil) | 24"o.c. | (2) Layers / (2) Layers - 5/8" Type X | R-13 | 62 | 48 | L3173.08-113-11-R0 |
| 3/4 Hr | U423 | 3-1/2" Structural Stud (33mil) | 24"o.c. | (1) Layers / (1) Layers - 1/2" Type C | R-19 | 53 | 37 | L3173.10-113-11-R0 |
| 1 Hr | U423 | 3-1/2" Structural Stud (33mil) | 24"o.c. | (1) Layers / (1) Layers - 5/8" Type X | R-19 | 55 | 38 | L3173.12-113-11-R0 |
| 1-1/2 Hr | U423 | 3-1/2" Structural Stud (33mil) | 24"o.c. | (2) Layers / (2) Layers - 1/2" Type C | R-19 | 62 | 48 | L3173.11-113-11-R0 |
| 2 Hr | U423 | 3-1/2" Structural Stud (33mil) | 24"o.c. | (2) Layers / (2) Layers - 5/8" Type X | R-19 | 63 | 50 | L3173.13-113-11-R0 |
| 1 Hr | U465 | 3-5/8" ProSTUD 20 (18mil) | 24"o.c. | (1) Layers / (1) Layers - 5/8" Type X | None | 45 | 29 | L3173.03-113-11-R0 |
| 1 Hr | U465 | 3-5/8" ProSTUD 20 (18mil) | 24"o.c. | (1) Layers / (1) Layers - 5/8" Type X | Mineral Wool | 53 | 36 | L3173.04-113-11-R0 |
| 1 Hr | U465 | 3-5/8" ProSTUD 20 (18mil) | 24"o.c. | (1) Layers / (1) Layers - 5/8" Type X | R-13 | 53 | 37 | L3173.05-113-11-R0 |
| 1 Hr | U493 | (2) 2-1/2" ProSTUD 25 (15mil) - ChaseWall | 24"o.c. | (1) Layers / (1) Layers - 5/8" Type X | R-13 Both Sides | 60 | 44 | L3173.06-113-11-R0 |
| 2 Hr | U493 | (2) 2-1/2" ProSTUD 25 (15mil) - ChaseWall | 24"o.c. | (2) Layers / (2) Layers - 5/8" Type X | R-13 Both Sides | 67 | 53 | L3173.07-113-11-R0 |
| 1 HR | V438 | 2-1/2" ProSTUD 25 (15mil) | 24"o.c. | (1) Layers / (1) Layers - 1/2" Type C | R-13 | 49 | 34 | L3173.09-113-11-R0 |
| 2 Hr | V438 |
1-5/8" ProSTUD 25 (15mil) |
24"o.c. | (2) Layers / (2) Layers - 1/2" Type C | 2-3/4" Fiberglass | 59 | 42 | L3173.14-113-11-R0 |
| 3 Hr | V438 | 1-5/8" ProSTUD 25 (15mil) | 24"o.c. | (3) Layers / (3) Layers - 1/2" Type C | 2-3/4" Fiberglass | 63 | 49 | L3173.15-113-11-R0 |
| 4 Hr | V438 | 1-5/8" ProSTUD 25 (15mil) | 24"o.c. | (4) Layers / (4) Layers - 1/2" Type C | 2-3/4" Fiberglass | 66 | 53 | L3173.16-113-11-R0 |
10" TradeReady® Steel Joists w/Levelrock
| Material Description | STC | IIC | Test Report | |
|---|---|---|---|---|
| Carpet w/ Pad | 55 | 80 | J4775.02 | Add to top of Levelrock® |
| Ceramic w/ NobleSeal® | 57 | 50 | J4775.06 | |
| Shaw Engineered Wood | 54 | 50 | J4775.03 | |
| Shaw Como Vinyl 12mm | 55 | 48 | J4775.04 | |
| Shaw Expo Vinyl 6mm | 54 | 47 | J4775.05 | |
| Baseline System (Nothing on top of Levelrock) (See full material list here) Ceiling: (1) layer 5/8" Type C |
54 | 43 | J4775.01 | Baseline System |
| +(1) Gypsum C-Core Layer with: Shaw Expo Vinyl 6mm on top of the floor |
58 | 51 | J4775.07 | Add to bottom of ceiling |
12" Wood Truss Joist (TJI) w/Levelrock
With (2) layers 1/2" Type C attached to hat channel
(UL Design No. UL-L518)
| Material Description | STC | IIC | Test Report | |
|---|---|---|---|---|
| Carpet w/ Pad | 62 | 84 | J4776.03 | Add to top of Levelrock® |
| Ceramic w/ NobleSeal® | 63 | 56 | J4776.07 | |
| Shaw Engineered Wood | 62 | 56 | J4776.04 | |
| Shaw Como Vinyl 12mm | 62 | 54 | J4776.05 | |
| Shaw Expo Vinyl 6mm | 61 | 53 | J4776.06 | |
| Baseline System (Nothing on top of Levelrock) Ceiling: (2) layers 1/2" Type C |
62 | 50 | J4776.02 | Baseline System |
Other 12" Wood Truss Joist (TJI) Acoustical Tests
| Material Description | STC | IIC | Test Report |
|---|---|---|---|
| Shaw Expo Vinyl 2mm (On top of Levelrock) Ceiling: (3) layers 1/2" Type C |
62 | 55 | J4776.08 |
Same baseline system (Unrated)
| Material Description | STC | IIC | Test Report |
|---|---|---|---|
| Ceramic w/ NobleSeal® (On top of Levelrock) Ceiling: (1) layer 1/2" Type C |
62 | 53 | J4776.01 |
16" Wood Open Web Truss (OWT) w/levelrock
With (1) layer 5/8" Type C attached to hat channel
(UL Designs: L521, L528, L546, L550, L558, L563, L574, L576, L587, L592, M508)
| Material Description | STC | IIC | Test Report | |
|---|---|---|---|---|
| Carpet w/ Pad | 59 | 79 | J4777.02 | Add to top of Levelrock® |
| Ceramic w/ NobleSeal® | 59 | 53 | J4777.06 | |
| Shaw Engineered Wood | 58 | 53 | J4777.03 | |
| Shaw Como Vinyl 12mm | 58 | 51 | J4777.04 | |
| Shaw Expo Vinyl 6mm | 58 | 51 | J4777.05 | |
| Baseline System (Nothing on top of LevelRock) Ceiling: (1) layer 5/8" Type C attached to hat channel |
58 | 50 | J4777.01 | Baseline System |
Other 16" Wood Open Truss (OWT) Acoustical Tests
With (2) or more layers 5/8" Type C attached to hat channel
(UL Designs: L521, L528, L542, 546, L550, L558, L563, L574, L576, L587, L592, M508)
| Material Description | STC | IIC | Test Report |
|---|---|---|---|
| Shaw Expo Vinyl 2mm (On top of Levelrock) Ceiling: (2) layers 5/8" Type C attached to hat channel |
61 | 55 | J4777.07 |
| Shaw Expo Vinyl 2mm (On top of Levelrock) Ceiling: (3) layers 5/8" Type C attached to hat channel |
62 | 55 | J4777.08 |
16" wood Open Web truss (OWT) w/levelrock
With (1) layer 5/8" Type C on the bottom of the joist + (2) Layers 5/8" Type C attached to hat channel
(UL Design No. UL-M510)
| Material Description | STC | IIC | Test Report | |
|---|---|---|---|---|
| Carpet w/ Pad | 58 | 75 | J4778.02 | Add to top of Levelrock® |
| Ceramic w/ NobleSeal® | 57 | 51 | J4778.06 | |
| Shaw Engineered Wood | 58 | 50 | J4778.03 | |
| Shaw Como Vinyl 12mm | 58 | 49 | J4778.04 | |
| Shaw Expo Vinyl 6mm | 58 | 50 | J4778.05 | |
| Baseline System (Nothing on top of LevelRock) UL Design No. UL-M510 Ceiling: (1) layer 5/8" Type C +(2) layers 5/8" Type C attached to hat channel |
58 | 50 | J4778.01 | Baseline System |
Other 16" Wood Open Truss (OWT) Acoustical Tests
With (1) layer 5/8" Type C on the bottom of the joist + (3) Layers 5/8" Type C attached to hat channel
(UL Design No. UL-M510)
| Material Description | STC | IIC | Test Report |
|---|---|---|---|
| Shaw Expo Vinyl 2mm (On top of Levelrock) Ceiling: (1) layer 5/8" Type C +(3) layers 5/8" Type C attached to hat channel |
62 | 55 | J4778.08 |
(Not Rated)
With (1) layer 5/8" Type C on the bottom of the joist + (1) Layers 5/8" Type C attached to hat channel
| Material Description | STC | IIC | Test Report |
|---|---|---|---|
| Shaw Expo Vinyl 2mm (On top of Levelrock) Ceiling: (1) layer 5/8" Type C attached to hat channel |
61 | 55 | J4778.07 |
18" wood Open Web truss (OWT) w/levelrock
With (1) layer 5/8" Type C attached to hat channel
(UL Designs: L521, L528, L546, L550, L558, L563, L574, L576, L587, L592, M508, L534, L562, M503)
| Material Description | STC | IIC | HIIC | Test Report | |
|---|---|---|---|---|---|
| 2mm LVT Glue Down | 62 | 55 | 55 | P2294.05 | Add to top of Levelrock® |
| 5.5mm LVT with RST02PS Sound Mat | 61 | 59 | 65 | P2294.02 | |
| Engineered Wood | 61 | 59 | 67 | P2294.04 | |
| Carpet with Pad | 62 | 82 | 90 | P2294.06 | |
| Ceramic Tile | 61 | 51 | 51 | P2294.07 | |
| Baseline System (Nothing on top of LevelRock) Ceiling: (1) layer 5/8" Type C |
62 | 51 | 50 | P2294.03 | Baseline System |
Other 18" Wood Open Truss (OWT) Acoustical Tests
With (1) layer 5/8" Type X attached to hat channel
(UL Designs: L521, L528, L546, L550, L558, L563, L574, L576, L587, L592, M508, L534, L562, M503)
| Material Description | STC | IIC | HIIC | Test Report | |
|---|---|---|---|---|---|
| 5.5mm LVT with RST02PS Sound Mat | 61 | 58 | 66 | P2294.01 | Add to top of Levelrock® |
| Baseline System (Nothing on top of LevelRock) Ceiling: (1) layer 5/8" Type X |
62 | 50 | 50 | P2294.09 | Baseline System |
8" Concrete Slab w/ (1) Layer Gypsum Ceiling
(1) layer 5/8" Type X attached to hat channel
| Material Description | STC / Test Report | IIC / Test Report |
|---|---|---|
| Carpet Tiles | 62 RAL-TL21-030 |
61 RAL-IN21-009 |
| Vinyl Planks 7mm | 63 RAL-TL21-031 |
61 RAL-IN21-010 |
| Baseline (Concrete Floor Only) Nothing on top or bottom |
58 RAL-TL21-080 |
|
| Bare Concrete Floor (Nothing on top of 8" Concrete) Ceiling: R-6.7 unfaced fiberglass insulation + (1) layer 5/8" Type X |
62 RAL-TL21-032 |
60 RAL-IN21-011 |
8" Concrete Slab w/ (2) Layers Gypsum Ceiling
(2) layers 5/8" Type X attached to hat channel
| Material Description | STC / Test Report | IIC / Test Report |
|---|---|---|
| Carpet Tiles | 63 RAL-TL21-029 |
61 RAL-IN21-008 |
| Vinyl Planks 7mm | 63 RAL-TL21-020 |
64 RAL-IN21-003 |
| Baseline (Concrete Floor Only) Nothing on top or bottom |
58 RAL-TL21-080 |
30 RAL-IN21-014 |
| Bare Concrete Floor (Nothing on top of 8" Concrete) Ceiling: R-6.7 unfaced fiberglass insulation + (2) layers 5/8" Type X |
63 RAL-TL21-027 |
64 RAL-IN21-006 |
Wall tests were performed in accordance with:
- ASTM E90 - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions
- ASTM E2235 - Standard Test Method for Determination of Decay Rates for Use in Sound Insulation Test Methods
Floor/Ceiling test were performed in accordance with:
- ASTM E90 - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions
- ASTM E413 - Classification for Rating Sound Insulation
- ASTM E492 - Standard Test Method for Laboratory Measurement of Impact Sound Transmission Through Floor-Ceiling Assemblies Using the Tapping Machine
- ASTM E989 - Classification for Determination of Impact Insulation Class (IIC)
- ASTM E2235 - Standard Test Method for Determination of Decay Rates for Use in Sound Insulation Test Methods
- Contact ClarkDietrich Technical Services at 888-437-3244 for questions about sound rated systems.
Installation
CDSC Installation Guide
Fasteners:
- CDSC to Wood Framing Studs:
#8 x 2-1/2" minimum size coarse thread screw (Recommended #12 or #10 x 2-1/2" hex head) - CDSC to Steel Framing Studs:
#8 x 1-1/2" minimum size fine thread screw (Recommended #12 or #10 x 1-5/8" hex head) - CDSC to Concrete or CMU:
1/4” drop-in anchor, 1/4” drive spike, 3/16” x tapcon, shoot in pin with washer, or product with equal load capabilities (Minimum 120 lbs Ultimate, Sheer and Pullout).
Length of fastener determined by the concrete type, strength, and fastener min embed requirements. - DO NOT attach CDSC to framing members with nails.
- (Only use approved screws)
Code Approvals & Performance Standards
- ASTM A653 Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process
- ASTM A1003 Standard Specification for Steel Sheet, Carbon, Metallic- and Nonmetallic-Coated for Cold-Formed Framing Members
- ASTM D395 Standard Test Methods for Rubber Property - Compression Set
- ASTM D412 Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomer - Tension
- ASTM D573 Standard Test Method for Rubber - Deterioration in an Air Oven
- ASTM D1149 Standard Test Methods for Rubber Deterioration - Cracking in an Ozone Controlled Environment
- ASTM D2000 Standard Classification System for Rubber Products in Automotive Applications
- ASTM D2137 Standard Test Methods for Rubber Property - Brittleness Point of Flexible Polymers and Coated Fabrics
- ASTM D2240 Standard Test Method for Rubber Property - Durometer Hardness
- UL File Number R19331 Full list of ProSTUD, Spazzer, Resilient Channel, Sound Clip and Barrier Mesh UL design assemblies
- SDS CD Sound Clip Interior framing sound improvement
Product Submittal Sheets
Click the below Product Code to view Submittal/Tech Datasheet.
| Product Code | Description |
|---|---|
| CDSC | ClarkDietrich Sound Clip™ |
ClarkDietrich SubmittalPro®
Submittal sheets for the exact product you're looking for can be created by using ClarkDietrich's SubmittalPro® Product Submittal System.
- Contact ClarkDietrich Technical Services at 888-437-3244 for any questions about creating product submittals or using SubmittalPro.