2 lb Non Reinforced Mass Loaded Vinyl Sound Barrier

Steel Guard Safety's 2 lb per square foot non-reinforced mass loaded vinyl (MLV) delivers superior sound blocking performance over standard 1 lb MLV — carrying an STC 32 rating for applications where maximum acoustic barrier performance is required. Made in the USA from barium sulfate, this heavier MLV installs against walls, floors, ceilings, pipes, and ductwork to stop sound transmission through the assembly.

Why Choose 2 lb Over 1 lb MLV

The mass of an acoustic barrier is the primary driver of its sound blocking performance. Doubling the mass per square foot of MLV from 1 lb to 2 lb increases the STC rating from 26 to 32 — a meaningful improvement for applications with higher noise levels or stricter noise control requirements. The 2 lb non-reinforced MLV is the right choice when maximum sound blocking is the priority and temperature or mechanical reinforcement are not concerns. It can be used alongside acoustic blankets and sound curtains for combined absorption and blocking performance.

2 lb Non Reinforced MLV Specifications

• Weight: 2 lb per square foot
• STC rating: 32 sound transmission loss
• Available sizes: 4 ft x 25 ft and 4 ft x 50 ft rolls
• Resistant to water, oils, and most chemicals
• Made in the USA from barium sulfate compound
• Ships 2-3 business days

Applications

• High-performance wall and ceiling sound barrier assemblies
• Floor underlayment requiring maximum impact and airborne noise reduction
• Heavy-duty pipe and duct wrapping for HVAC noise control
• Machine and equipment enclosure lining
• Industrial noise control where STC 26 is insufficient
• Construction and infrastructure noise barrier applications

For standard weight applications see our 1 lb Non Reinforced MLV. For a reinforced option with higher temperature resistance see our 1 lb XTRM Ply Reinforced MLV. For duct and pipe applications see our Acoustic Duct & Pipe Wrap.

Frequency    125    250    500    1000    2000    4000    STC
db                   19      23      27       32       37        43        32

Ships 2 - 3 Business Days