Soundsulate 1 lb Mass Loaded Vinyl MLV 4.5ft x 30ft - Effective Noise

In this review the Soundsulate 1 lb Mass Loaded Vinyl (MLV) is evaluated for homeowners, hobbyists, and small studio builders who need a straightforward way to block airborne noise. The bottom line: it is a dense, flexible barrier that reliably reduces voices, music, and street noise when installed to fully cover a surface. For those seeking to cut room-to-room noise or improve a home theater or vehicle cabin, the single biggest reason to buy is its proven soundblocking performance and simple, customizable installation.

Key Features

• STC 27 rating: Provides measurable reduction of airborne sounds such as voices and music when surfaces are fully covered.
• One lb per sq ft density: The heavy construction delivers mass that directly helps block sound transmission through walls, floors, and ceilings.
• 4.5 ft x 30 ft roll: A 135 sq ft roll covers large areas without many seams, reducing weak points that could let sound through.
• Flexible and durable: Material is easy to cut and shape for doors, vehicles, or irregular framing while resisting tears and moisture.
• Non toxic barrier: Will not off-gas or decompose, making it suitable for indoor use in homes, studios, boats, and RVs.

Who It's For

This product is best for DIY installers, home theater owners, and small studio operators who need an economical way to reduce airborne noise without rebuilding walls. Its weight and flexibility make it practical for retrofits to walls, ceilings, doors, and vehicle interiors.

It is not a standalone cure for every noise problem: those primarily fighting structure-borne impact noise like footsteps above or heavy vibrations should combine MLV with decoupling, resilient channels, or dedicated impact-isolation products instead of relying on MLV alone.

Pros & Cons

Pros

• High mass delivers real reduction of airborne sound when installed with full coverage and sealed edges.
• Large roll size (4.5 ft x 30 ft) reduces seams and simplifies covering full walls or vehicle panels.
• Non toxic and moisture resistant, so it can be used in a variety of indoor and mobile environments.

Cons

• Does not address impact or vibration noise by itself, so additional treatments may be needed for footsteps or structure-borne sounds.
• Some customers report mixed perceptions of effectiveness unless installation is airtight and gap-free.

Specifications

Material weight	1 lb per sq ft
Roll dimensions	4.5 ft x 30 ft (135 sq ft)
Approximate thickness	0.12 in (commonly called 1/8 in)
STC rating	27 (proven rating for airborne sound)
Roll weight	Approx. 108 lbs per roll
Indoor safety	Non toxic, will not off-gas

Our Verdict

Soundsulate 1 lb MLV is a practical, cost-effective solution for reducing airborne noise in homes, studios, vehicles, and boats when installed correctly. It offers durable, flexible coverage and a proven STC rating, making it good value for anyone looking to block voices, music, or street noise; however, pair it with impact-control methods when dealing with footsteps or structural vibration.

Frequently Asked Questions

Will this stop footsteps or impact noise?
Answer: No; MLV is designed to block airborne sound and should be combined with isolation or resilient-layer products to address impact noise.

Can it be used in a car or boat?
Answer: Yes; the product is flexible, non toxic, and moisture resistant, so it is suitable for automobiles, boats, and RVs when properly installed.

How important is sealing seams?
Answer: Very important; even small gaps reduce performance, so full coverage and sealed edges are required for best results.