Noise pollution affects comfort, productivity, and well-being. If you are serious about cutting out noise pollution and reducing sound transmission, you should know about mass loaded vinyl (MLV).
MLV sheets stand out as one of the most effective and versatile options. You can use MLV in residential, commercial, and industrial space, to add density to walls, ceilings, and floors. It is this density that offers you genuine soundproofing capability.
Skip to:
- What is MLV?
- How does MLV work?
- Benefits of soundproofing with MLV sheets
- Limitations of MLV
- Where to use MLV sheets
- How to install MLV
- Final tips
- Soundproofing with MLV sheets: FAQs
What is MLV?
MLV is a dense, flexible soundproofing material typically manufactured in thin rolls or sheets. It is made from a combination of PVC (polyvinyl chloride) and heavy mineral fillers, which give it both mass and flexibility.
Unlike rigid soundproofing panels, MLV can be easily bent, cut, and applied to different surfaces without losing its sound-blocking qualities.
Key features of MLV include:
✅ High density in a thin profile – provides effective noise reduction without taking up much space.
✅ Flexibility – can be rolled out and applied to irregular surfaces.
✅ Durability – resistant to moisture, fire-rated, and long-lasting.
How does MLV work?
The effectiveness of MLV lies in its ability to block airborne sound waves by adding mass to structures.
Sound travels through vibrations, and lightweight materials like drywall or wood can easily vibrate, allowing sound to pass through. By adding a dense layer of MLV, those vibrations are dampened, reducing the transmission of sound.
In acoustic terms, MLV works on the principle of the mass law: the more mass a barrier has, the more sound it can block.
MLV is particularly effective at reducing mid- to high-frequency sounds, such as voices, TV noise, and traffic sounds.
Here’s how it compares with other soundproofing materials:
Benefits of soundproofing with MLV sheets
👍 Excellent sound blocking
MLV is specifically engineered for soundproofing. A single 1/8-inch thick sheet can provide a Sound Transmission Class (STC) rating improvement of up to 26–30, depending on the application.
👍Space-saving solution
Unlike bulky soundproofing panels or double-wall construction, MLV adds mass without taking up significant space. This makes it ideal for apartments, condos, and small studios.
👍 Versatile applications
It can be used on walls, ceilings, floors, doors, and even ductwork. Its flexibility allows it to adapt to a variety of spaces, making it more versatile than rigid acoustic materials.
👍 Easy to install
MLV sheets can be cut with a utility knife and installed using nails, screws, staples, or adhesives. They can also be layered for increased soundproofing.
👍 Durable and safe
Many MLV products are fire-rated, resistant to mold and mildew, and suitable for both residential and industrial environments.
Limitations of MLV
While highly effective, MLV isn’t a one-size-fits-all solution. Some limitations include:
⚖️Cost
MLV can be more expensive than other soundproofing options like foam or fiberglass insulation.
⚖️ Weight
Despite being thin, MLV is heavy (approximately 1 pound per square foot at 1/8-inch thickness). This makes large installations labor-intensive.
⚖️ Not a complete solution
MLV works best when combined with other soundproofing strategies, such as sealing gaps, adding resilient channels, or installing acoustic insulation.
⚖️ Not pretty
It’s usually black or grey and looks like industrial rubber. But what you can do is install MLV behind drywall or paneling, effectively hiding it from view while still reaping the benefits of soundproofing. Or beneath the carpet if we are talking about flooring.
Where to use MLV Sheets
🏠 Residential use
Homeowners often use MLV to soundproof shared walls, bedrooms, and home theaters. It’s particularly useful in apartments and condos where noise from neighbors is a frequent issue.
🎧 Recording studios
MLV is a staple in professional and home recording studios. Its ability to block external noise ensures cleaner recordings and minimizes sound leakage.
🏢 Offices and commercial spaces
In offices, MLV is used to reduce distractions from adjacent meeting rooms, hallways, or HVAC systems. This contributes to a more focused and private work environment.
🏭 Industrial settings
Factories and workshops install MLV around loud machinery to protect workers’ hearing and meet occupational safety standards.
🚗 Automotive applications
MLV sheets are also used in cars to reduce road noise and improve cabin comfort. They are applied under carpets, inside doors, or in the trunk area.
How to install MLV
Step 1: Preparation
👉 Measure the surface area where MLV will be installed.
👉 Cut the sheets to size using a sharp utility knife.
👉 Ensure the surface is clean and free from dust or grease.
Step 2: Installation Options
- Direct attachment
Use nails, screws, or industrial staples to attach MLV directly to walls or ceilings.
- Adhesive mounting
For smooth surfaces, construction adhesive or spray adhesive can be used.
- Layering between drywall
Sandwich MLV between two layers of drywall for maximum effectiveness.
- Floating floor installation
Lay MLV under flooring materials (carpet, laminate, or hardwood) to reduce impact and airborne noise.
- Door and window treatments
Attach smaller sheets of MLV to doors or window plugs for targeted soundproofing.
Step 3: Sealing
👉 Seal all seams and edges with acoustic caulk or specialized tape to prevent sound leakage.
👉 Even small gaps can significantly reduce the effectiveness of soundproofing.
Final tips
💁 Combine with insulation: Use fiberglass or mineral wool insulation inside walls before adding MLV for better results.
💁 Use resilient channels: These decouple the wall structure, preventing vibrations from traveling through.
💁 Double layers: For high-noise environments, applying multiple layers of MLV significantly improves sound blocking.
💁 Seal everything: Pay close attention to outlets, vents, and other openings.
Soundproofing with MLV sheets: FAQs
What thickness of MLV should I use?
Most MLV sheets come in 1/8-inch (1 lb per square foot) or 1/4-inch (2 lbs per square foot) thickness. The choice depends on the level of noise—1/8-inch is suitable for moderate residential noise, while 1/4-inch works better in high-noise areas or commercial applications.
Can MLV be painted?
Yes, MLV can be painted, though it is not always recommended. For a cleaner look, many people prefer to cover it with drywall, fabric, or panels rather than painting directly on the vinyl surface.
Does MLV work for impact noise, like footsteps?
MLV is primarily designed to block airborne noise (voices, music, traffic). For impact noise, it’s more effective when combined with underlayments, carpets, or resilient flooring solutions.
Is MLV safe for indoor use?
Most MLV products are non-toxic, mold-resistant, and meet fire safety standards. Always check the product specifications for certifications before installation.
