Accoustical Materials

AcousticalMass-loaded Vinyl (MLV)

Mass-loaded vinyl (MLV) is heavy, yet thin, and flexible, which makes it a perfect soundproofing material for specific kinds of applications. MLV is a flexible sound barrier product that is heavily weighted. In most modern products, the weight is provided by calcium silicate, although barium sulfate is also still used. It’s this added weight that provides the soundproofing element of mass.

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Characteristics of MLV: MLV acoustical material supply comes in several thicknesses, with the following approximate sound transmission class (STC) values:

Thickness
(inches)
Weight
(pounds per square foot)
Sound Transmission Class
1/16 0.5 21
1/8 1 26–27
1/4 2 31–32

Advantages of MLV: The features that make mass-loaded vinyl so interesting for soundproofing applications are its thinness and its flexibility. MLV can be nailed, screwed, stapled, or hung (using reinforcement and grommets).

Thinness: A sheet of MLV that is 1/8 inch thick typically weighs about 1 pound per square foot. For comparison, that’s more than twice the mass in an equivalent thickness of drywall. If space is at a premium in your soundproofing project, MLV offers a solution.

Flexibility: The classic source of soundproofing mass, drywall, comes in rigid panels. MLV, in contrast, is useful in situations where you need a flexible sound barrier, such as for wrapping around pipes. It can also be transported in a roll and used in a temporary installation as a sound curtain.

MASS LOADED VINYL BARRIER MATERIAL
1.0 lb. NON-REINFORCED

STANDARD SPECIFICATION

TEST Width Color Surface

TEST METHOD

STANDARD 48″ & 54″ (standard) BlackSmooth
Density/Weight ASTM D412 1.0 lb. per SF
Tensile Strength ASTM D412 500 PSI
Die “C” Tear ASTM D412 100 LBS.
Shore A Durometer ASTM D2240 85 +1- 5
Elongation ASTM D412 90%
Burn Tests Meets MVSS302 Self Extinguishing
UL94 — HF-1 Pass
Service Temperature -20°F — 180°F
Sound Transmission ASTM E 90 (90A) 26

 

Class (STC)

Product #

Sound Transmission Class_(db Frequency Hz)

STC

125

256 500

1000

2000

   4000

17

 18  22

     27

32

      36

26

 

The information contained herein is believed to be reliable, but all recommendations or suggestions are made without guarantee inasmuch as conditions and methods of commercial use are beyond our control.

MASS LOADED VINYL BARRIER MATERIAL
2.0 lb. NON-REINFORCED

STANDARD SPECIFICATION

ASTM D412 500 PSI100 LBS.

TEST Width Color Surface

TEST METHOD

STANDARD 48″ & 54″ (standard) BlackSmooth
Density/Weight ASTM D412 2.0 lb. per SF
Tensile Strength ASTM D412 500 PSI
Die “C” Tear ASTM D412 100 LBS.
Shore A Durometer ASTM D2240 85 +1- 5
Elongation ASTM D412 90%
Burn Tests Meets MVSS302 Self Extinguishing
UL94 — HF-1 Pass
Service Temperature -20°F — 180°F
Sound Transmission ASTM E 90 (90A) 31

 

Class (STC)

Product #

Sound Transmission Class_(db Frequency Hz)

STC

125 256 500 1000 2000 4000
20  22  26 32 37 41 31

 

The information contained herein is believed to be reliable, but all recommendations or suggestions are made without guarantee inasmuch as conditions and methods of commercial use are beyond our control.

MASS LOADED VINYL BARRIER MATERIAL

Plenum (Class A)

1.0 lb. NON-REINFORCED

STANDARD SPECIFICATION

Product Description:

Width                                                48″

Color                                                 White

Surface                                               Smooth

TEST                                                 TEST METHOD                                STANDARD

Density/Weight                                 ASTM D412                                      1.0 lb. per SF

Tensile Strength                                ASTM D412                                      625 PSI

Die “C” Tear                                     ASTM D412                                      125 LBS.

Shore A Durometer                            ASTM D2240                                    89 +/- 5

Elongation                                         ASTM D412                                      90%

Burn Tests                                         ASTM E-84

Flame Spread Index (FSI)                   < 25
50 Smoke Developed Index (SDI)        < 50

Service Temperature                                                                                   -20°F  – 180°F

Sound Transmission                           ASTM E 90 (90A)                             26

Class (STC)

Revision as of May 2012

The information contained herein is believed to be reliable, but all recommendations or suggestions are made without guarantee inasmuch as conditions and methods of commercial use are beyond our control.

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