Wall Blokker Sound Membrane

Wall Blokker Data Sheet Wall Blokker Specs

Commercial Acoustics Wall Blokker is an engineered barrier for sound reduction. Wall Blokker is a 1 lb/sf EVA-based mass loaded sound membrane, which is flexible and designed for commercial, industrial and residential applications. It is used behind a finished wall to reduce noise transfer across a wide array of frequencies, improving the STC of the partition. Wall Blokker Sound Membrane has a stand-alone STC-rating of 26, and can improve partition STCs to 50-70+.

Unlike traditional Mass Loaded Vinyl, Wall Blokker was developed in the automotive industry to provide superior soundproofing performance with long life-cycles and without off-gassing and other degrading processes. At 1/8″ thick, a single layer can provide equivalent soundproofing to multiple layers of drywall, often at a fraction of the price and schedule.

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SKU: 007 Categories: Sound Blocking, Soundproofing Membranes

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Specifications

Wall Blokker is a sound membrane that installs directly on studs, behind drywall, to dramatically improve the soundproofing capacity of a partition. Ideal to achieve STC 50 or higher on single-stud walls, as well as high-performance soundproofing in movie theaters and studios, Wall Blokker is Commercial Acoustics’ flagship soundproofing product.

Like all soundproofing or acoustical membranes, Wall Blokker achieves its STC performance by two approaches – increasing the mass of the wall, while also improving its dampening characteristics. However, unlike traditional PVC-based mass loaded vinyl, Wall Blokker does not off-gas because it does not require plasticizers for its flexibility. Furthermore, after ten years of research and development, we have performed STC tests on dozens of wall assemblies to provide exact STC performance on a variety stud, spacing, and drywall configurations.

STC Product Specifications:

STC Ratings of 50-70 or higher, in metal-stud, wood-stud, and CMU assemblies
Approved for all UL U300, U400, and V400 Series, approved on 1 and 2 hour rated assemblies
1/8″ thick, 1 lb/sf Acoustical-Grade Polymer
Class A rating per ASTM E84, 1 hour fire resistance per ASTM E119
Non-PVC, EVA-based soundproofing membrane (no off-gassing, doesn’t break down over time)
Mold and mildew resistant per ASTM D3273
Cost-effective alternative to resilient channel, SoundBreak, or doubling drywall layers
Independently lab tested for STC performance in accordance with ASTM E90

Soundproofing Membrane Features & Benefits:

Delta STC of 8-12 points on metal studs
Significant low frequency attenuation to reduce more disruptive bass noises
STC Test Data on dozens of metal and wood stud assemblies, including double studs
Build quieter structures with less material and labor
Air and moisture barrier for HVAC efficiency and mold and mildew prevention

Installation Overview: ~1000 Square Feet/Man Day

Detailed Installation Instructions
Installation on metal studs (with drywall screws) and wood studs (drywall staples) under drywall
Rolled good easily cuts with a utility knife

Product Dimensions:

4’x25′ rolls in stock
Custom lengths available for truckload quantities
Standard Tolerances
- Width: +/- ½”
- Length: +/- 1%
- Nominal Thickness: +/- 2%

Ideal Soundproofing For:

Hotel rooms, bedrooms, or sound-sensitive areas – achieve STC 52-56 on single metal stud walls
Movie theaters – achieve STC 68 on double metal studs after removing drywall
Residential, commercial, hospitality projects requiring custom soundproofing performance

Size	4' x 25' Roll, Custom roll sizes available for truckload quantities
Thickness	1/8", 1 lb/sf

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Commercial Acoustics Wall Blokker Specification

Division 09 – Finishes

Section 098400 – Acoustical Components

PART 1 – GENERAL

1.1 SUMMARY

A. Section includes:

1. Wall Blokker by Commercial Acoustics soundproofing membrane.

1.2 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract including supplements and addendums.

B. Applicable Specification Sections: Division 01 – General and Division 09 – Finishes.

1.3 REFERENCES

A. International Building Code (IBC) 2012:

1. Section 1207 – Sound Transmission

B. ASTM Tests:

1. E90 – Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements.

2. E413 – Classification for Rating Sound Insulation.

C. ASTM Specifications:

1. C840 – Standard Specification for Application and Finishing of Gypsum Board.

1.4 SUBMITTALS

A. For each product indicated:

1. Product Data Sheet: manufacturer’s specifications including laboratory test summary.

2. Installation Instructions: detailed installation procedure including jobsite condition requirements, surface preparation requirements, and approved products.

1.5 DELIVERY, STORAGE, AND HANDLING

A. All materials shall be delivered in original unopened packaging.

B. Wall Blokker may be stored in a wet or dry environment and may be stored outdoors for up to three months on construction sites without special tarps or covering.

1. If stored below freezing temperatures, material may require up to 48 hours of acclimation to regain pliability.

2. Acclimate Wall Blokker for a minimum of 24 hours at temperatures 60 degrees (F) or greater to reduce material stiffness when handling.

3. If material stiffens, it may be softened more rapidly using a heat gun.

1.6 PROJECT CONDITIONS

A. Wall Blokker is typically installed after framing, insulation, and electrical are complete. Insulation should be installed in the wall cavity in addition for optimal performance.

B. Ensure that all applicable inspections are completed prior to installation of Wall Blokker.

C. Wall Blokker may be installed prior to “drying in” the building (prior to installation of windows and doors).

1. Drywall should be installed within 2-4 weeks of Wall Blokker to prevent excessive wear.

a. For longer delays, washers should be installed for securely fasten the material.

2. Drywall installation permanently attaches Wall Blokker to the stud.

PART 2 – PRODUCTS

2.1 WALL BLOKKER BY COMMERCIAL ACOUSTICS

A. Materials:

1. Engineered sound reduction membrane.

2. Flexible Ethylene Vinyl Acetate (EVA) product made from post-industrial recycled material.

B. Dimensions:

1. Thickness: 1/8”

2. Weight: 1 lb/sq.ft.

3. Standard Sizes: 4’x25’ rolls; 4’x10’ and 4’x8’ sheets; custom length rolls available.

4. Tolerances:

a. Width: +/- 0.5”

b. Length: +/- 1%

c. Nominal Thickness: +/- 0.10”

C. Performance:

1. Minimum STC = 25 (ASTM E90).

2. UL Classified Assemblies:

a. 300, 400, 500 Series

3. Flammability Rating:

a. Class 1 (ASTM E84 Rev. A)

b. 1-Hour fire resistance wall rating (ASTM E119)

c. 0.3 Thermal Resistance coefficient (ASTM C518)

4. Environmental:

a. Mold/Mildew resistant. No fungal/algae growth and no visible disfigurement (ASTM D3273 & ASTM G21).

b. Impermeable air and moisture barrier.

c. Non-PVC: no off-gassing.

d. HIPPA Compliant.

e. 100% recyclable at end of life.

PART 3 – EXECUTION

3.1 PREPARATION

A. Wall and/or stud assembly to receive Wall Blokker must be structurally sound prior to installation.

B. Wall must be clean and free of debris.

1. Protrusions greater than 1/16” shall be scraped from the surface to avoid puncturing.

C. See Section 1.6 for additional project condition requirements.

3.2 INSTALLATION

A. Starting in one corner of the room, install Wall Blokker flush with the top of the top plate, and hang it vertically.

B. Wood Studs:

1. Attach Wall Blokker to the top of the wood top plate using wide-crown ½” staples or pan head screws.

2. Fasten every 12” horizontally along the top plate.

3. Straighten Wall Blokker from the top down so that it is flush against the studs.

4. Attach Wall Blokker to the center of each vertical wood stud using ½” staples or pan head screws.

5. Fasten every 36” vertically along the center of each stud using an exterior fastener pattern, only fastening to the stud where the seam falls.

C. Metal Studs:

1. Attach Wall Blokker directly to the light gauge metal studs using drywall screws.

2. Fasten every 12” horizontally along the top.

a. Wall Blokker installed on walls greater than 15’ in height shall be secured with

washers along the top to prevent the fasteners from tearing the material.

b. Fasteners shall be used on intermediate studs (in addition to exterior studs) every 12’ vertically.

3. Straighten Wall Blokker from the top down so that it is flush against the studs.

4. Attach Wall Blokker to the center of each vertical stud using drywall screws.

5. Fasten every 36” vertically along the center of each stud.

3.3 PROCEDURE

A. Install Wall Blokker as required on all walls.

B. Keep fasteners as flush as possible to prevent protrusion into the finished wallboard.

1. Fasteners shall not protrude more than 1/16” from Wall Blokker surface.

C. Do NOT overlap the seams of separate sheets.

1. Tightly butt the side of the next sheet of Wall Blokker to the edge of the existing attached sheet.

D. For seams that do not fall on a stud, tape with “Seam-Seal” or equivalent.

1. If seams fall on the stud with gaps greater than 1/8”, then taping is also required.

2. Ensure that there are no bubbles or wrinkles in the tape. Commercial tape alternatives include commercial duct tape.

3. The tape is semi-permanent and will be permanently sealed in position when drywall is installed. Drywall installation will seal Wall Blokker against the existing studs.

E. Cut Wall Blokker to fit around irregular objects and penetrations including outlets, switches, and junction boxes.

1. Gaps shall be less than 1/8”.

2. Gaps greater than 1/8” shall be sealed with acoustical or non-hardening caulk.

3. Gaps greater than 1/4” may be filled with backer rod or fiber batting.

4. Putty pads should be installed on the back of all electrical boxes.

F. Caulk the bottom of the floor plate at the floor line with acoustical sealant.

G. Install drywall per normal technique (ASTM C840).

1. Wall Blokker will be fastened permanently when the gypsum board is installed.

H. See Detailed Installation Instructions Figure 1 for diagrams.

CONTACT WITH QUESTIONS:

Commercial Acoustics, (888) 815-9691

6122 Benjamin Rd, Tampa, FL 33634