Second Skin Luxury Liner 1 LB Mass Loaded Vinyl MLV Soundproofing Barrier Sheet Made in USA 1 Sheet 9 Sq Ft is a 1/8-inch mass loaded vinyl barrier designed to block airborne noise in automotive, home, and equipment enclosure applications. Constructed from mass loaded vinyl and manufactured in the USA using high-quality PVC, this 1 lb per square foot sheet is engineered as a dense sound barrier rather than a vibration damper. The material carries a stated Sound Transmission Class rating of 26 and is rated for heat up to 175°F, with FMVSS 302 fire testing noted in the product details.
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Material Composition and Construction
This solution is made from mass loaded vinyl and is specified at approximately 0.13 inches thick, delivering a weight of 1 pound per square foot. Each sheet measures 54 inches by 24 inches, covering 9 square feet. The tensile strength is listed at a minimum of 600 psi (4.1 MPa), and the product description emphasizes durability and tear resistance without fabric reinforcement. The vinyl is described as flexible enough to bend around wheel wells and wrap pipes while maintaining structural integrity.
For users evaluating 1 lb mass loaded vinyl sheets, the combination of thickness, weight, and tensile strength defines how the barrier behaves during installation and long-term use. The material is characterized as heavy-duty yet workable, balancing mass with flexibility for tight or irregular spaces.
Sound Blocking Performance
The product description distinguishes this barrier from standard vibration deadening mats, stating that it is designed to block airborne noise rather than simply reduce panel resonance. The listed STC rating of 26 reflects laboratory-tested sound transmission performance for the 1 lb configuration. The description also emphasizes that effective sound blocking requires full coverage and sealed seams to limit airborne sound paths.
When considering a soundproofing barrier sheet, density and coverage are central factors. This material is intended to act as a heavy shield against road hum, exhaust drone, and loud machinery when installed as a continuous layer. The instructions highlight sealing seams with foil tape to create an airtight finish.
Automotive and Equipment Applications
Recommended uses include machinery and generator enclosures, mechanical spaces, pipes and ductwork, interior walls, office partitions, and soundproof boxes. In automotive contexts, the product description references installation under carpets, over wheel wells, and on cabin-side firewalls. The sheet is described as suitable for wrapping noisy PVC pipes and HVAC ducts to reduce sound transmission.
For those building generator enclosure sound barriers or lining mechanical rooms, the material’s heat rating and FMVSS 302 fire testing are relevant technical considerations. The product description also references a “Soundproof Sandwich” method, where the vinyl layer is installed over a closed-cell foam decoupler to float the barrier and reduce direct contact with metal surfaces.
Installation Characteristics
The sheet is described as easy to cut with scissors and flexible enough to conform to many surfaces, although it is also characterized as heavy. Professional guidance in the description advises against applying it directly to metal and instead layering it over a decoupling material. Sealing seams and achieving full coverage are emphasized as key installation practices.
Each package includes one sheet covering 9 square feet. For users comparing automotive insulation sheets, the defined dimensions and weight per sheet help determine how many units are required for floors, trunks, or enclosure panels.
Product Information and Specifications
Brand: Second Skin
Material Type: Mass Loaded Vinyl
Item Thickness: 0.13 inches
Dimensions: 54 inches (L) x 24 inches (W)
Coverage: 9 square feet per sheet
Weight: 1 lb per square foot
Tensile Strength: Minimum 600 psi (4.1 MPa)
Heat Rating: Up to 175°F
Fire Testing: FMVSS 302 Passed
Pros
- 1 lb per square foot density in a 1/8-inch profile
- STC rating of 26
- FMVSS 302 fire tested
- Rated for heat up to 175°F
- Flexible sheet format measuring 54 x 24 inches
Cons
- Heavy sheet construction may require secure installation methods
- Effective sound blocking requires full coverage and sealed seams
This mass loaded vinyl sheet is structured for applications where airborne noise reduction is required through added mass and barrier performance. Reviewing the technical specifications and recommended installation practices can help determine whether this 1 lb configuration aligns with the intended automotive, home, or enclosure project.