MLV Weight:

Choose the best barrier for your project.

Roll Size — 2 LB MLV

Select the best size for your project

SizeCoveragePricePer SFSelect
4' x 4' 16 SF $94.99 $5.94/SF
4' x 12' 48 SF $259.99 $5.42/SF
4' x 15' 60 SF $319.99 $5.33/SF
Currently viewing: 4' x 15' — 2 LB, 60 SF
SR — Content Columns
Helpful Information

EnviroFlex™ 2LB 4' x 15' MLV Soundproofing

EnviroFlex™ Mass Loaded Vinyl is a premium, high-performance soundproofing solution designed for homeowners, contractors, and commercial builders who need maximum noise control. Made from dense, flexible recycled vinyl, this acoustic barrier blocks sound transmission through walls, ceilings, floors, and vehicles, delivering reliable results without bulky materials. Whether you’re tackling a DIY soundproofing project or managing a large-scale commercial installation, EnviroFlex MLV offers the ideal balance of performance, durability, and sustainability.

With a high STC (Sound Transmission Class) rating, EnviroFlex™ effectively reduces airborne noise such as voices, music, machinery, and traffic. Its flexible composition makes it easy to cut, shape, and install, whether applied directly to studs, layered behind drywall, or combined with insulation for superior results. Unlike spray foams or fiberglass alone, MLV creates a continuous, dense barrier that stops sound at the source.

EnviroFlex™ MLV is available in both 1 LB and 2 LB per square foot options, giving you the ability to match weight and performance to your specific application. Typical uses include residential remodeling, commercial office construction, music studios, home theaters, industrial spaces, and even vehicle and van soundproofing. Backed by our commitment to eco-friendly manufacturing, EnviroFlex is crafted from 100% recycled materials, making it not only effective but also a sustainable choice for modern construction.

If you’re looking for soundproofing that works, EnviroFlex™ Mass Loaded Vinyl delivers proven acoustic control with professional-grade quality. Reduce noise, improve comfort, and build quieter spaces with confidence.

Built for Real Projects

Practical Product Guidance

Explain the product, material, policy, or process in a clear way that helps customers make a confident decision.

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Product Information

Product Details

EnviroFlex™ Mass Loaded Vinyl is a premium, high-performance soundproofing solution designed for homeowners, contractors, and commercial builders who need maximum noise control. Made from dense, flexible recycled vinyl, this acoustic barrier blocks sound transmission through walls, ceilings, floors, and vehicles, delivering reliable results without bulky materials. Whether you’re tackling a DIY soundproofing project or managing a large-scale commercial installation, EnviroFlex MLV offers the ideal balance of performance, durability, and sustainability.

With a high STC (Sound Transmission Class) rating, EnviroFlex™ effectively reduces airborne noise such as voices, music, machinery, and traffic. Its flexible composition makes it easy to cut, shape, and install, whether applied directly to studs, layered behind drywall, or combined with insulation for superior results. Unlike spray foams or fiberglass alone, MLV creates a continuous, dense barrier that stops sound at the source.

EnviroFlex™ MLV is available in both 1 LB and 2 LB per square foot options, giving you the ability to match weight and performance to your specific application. Typical uses include residential remodeling, commercial office construction, music studios, home theaters, industrial spaces, and even vehicle and van soundproofing. Backed by our commitment to eco-friendly manufacturing, EnviroFlex is crafted from 100% recycled materials, making it not only effective but also a sustainable choice for modern construction.

If you’re looking for soundproofing that works, EnviroFlex™ Mass Loaded Vinyl delivers proven acoustic control with professional-grade quality. Reduce noise, improve comfort, and build quieter spaces with confidence.

Why This Material

Built for Real-World Performance

Use this section to explain why the material, construction, or product design is the right fit for the application.

Material
01

Dense and Durable

Built to add practical protection, weight, structure, or performance depending on the product application.

Install
02

Easy to Work With

Designed for straightforward cutting, fitting, fastening, or placement using common tools.

Use
03

Made for Real Projects

Useful across residential, commercial, fleet, shop, and jobsite applications.

Soundproofing Performance

What STC 26 Means in a Real Wall Assembly

MLV works by adding dense, flexible mass to the wall system. The standalone STC rating matters, but the bigger result comes from how the material performs as part of a complete wall, ceiling, or enclosure assembly.

28Base wall
34+ Insulation
41+ 2 LB MLV
50+Full assembly

Standalone STC shows material performance

For this product, STC gives shoppers a simple way to understand the material’s sound-blocking capability before installation.

Assemblies perform better than single layers

MLV is most effective when combined with drywall, insulation, sealed seams, and proper mechanical fastening.

Seams and gaps matter

Sound travels through weak points. Seal seams, edges, outlets, and penetrations to get the best result from the system.

Important: STC results depend on the full assembly, including framing, insulation, drywall layers, sealed seams, penetrations, and installation quality.

Drywall
STC MLV Barrier
Stud Cavity
Insulation
Drywall
Applications

Built for Real-World Use

Application

Walls

Use as a barrier layer in wall assemblies where added mass helps reduce sound transfer.

Application

Ceilings

Add material above or below ceiling assemblies to support better noise control between spaces.

Application

Vehicles

Cut to fit vans, cars, service vehicles, and other mobile spaces that need added sound control.

Install Guide

Simple Steps for a Better Finished Project

Difficulty DIY Friendly
Tools Basic
Cutting Utility Knife
Support Guides Available
1
Step 1

Measure the project area

Confirm the surface, space, vehicle floor, stair, or installation area before cutting or ordering accessories.

Pro tip Measure twice before trimming or fastening.
2
Step 2

Cut or position the material

Use a straight edge and sharp utility knife where trimming is needed, or align the product before final placement.

3
Step 3

Install and secure

Fasten, tape, drill, adhere, or drop the product into place depending on the product type and application.

4
Step 4

Check the finished result

Inspect seams, edges, fitment, coverage, and surface contact before putting the area back into service.

Questions

Product Questions, Answered

Common Questions

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