Question 1

Will this stop noise from my neighbors?

Accepted Answer

Yes, for airborne noise like voices, TV and music. Cover the entire wall with no gaps, tape every seam and caulk the edges. Even a small opening lets sound through.

Question 2

Will it stop footsteps from upstairs?

Accepted Answer

Not by itself. Footsteps are impact noise that travels through the structure. MLV works best alongside decoupling (resilient channel or clips) and insulation.

Question 3

How much do I need?

Accepted Answer

Multiply the wall's width by its height in feet, then add about 10% for trimming. Example: a 12 ft x 8 ft wall is 96 sq ft, so one 4' x 25' roll (100 sq ft).

Question 4

How do I install it?

Accepted Answer

Hang it on the studs with cap nails or staples, butt the seams tight, tape them, caulk around the edges, then cover with drywall. At 1 lb per sq ft it's heavy, so use two people.

Question 5

Is it fire rated?

Accepted Answer

The FSK Reinforced roll is fire rated to ASTM E84. If your project or building code calls for a fire-rated barrier, choose the FSK Reinforced roll.

Question 6

Standard roll or FSK Reinforced roll?

Accepted Answer

Both are 1 lb per sq ft, STC 27 and made in USA. The FSK roll adds a foil-scrim-kraft facing for strength and tear resistance and is fire rated to ASTM E84. Pick it for ducts, pipes and installs that stay exposed or are hung.

Question 7

What's the difference between 1 lb and 2 lb MLV?

Accepted Answer

1 lb (STC 27, about 1/8 in) is the standard for walls, ceilings and floors. 2 lb is twice as heavy and is used for very loud sources like drums.

Question 8

Does it smell?

Accepted Answer

It's low odor and non-toxic, and it won't off-gas. A slight smell when first unrolled fades if you let it air out for a day or two.

Question 9

Can I use it in a car or RV?

Accepted Answer

Yes. On metal, apply a vibration-damping mat first, then MLV on top, then carpet or trim. MLV alone on bare metal does much less.

Question 10

Is it made in the USA?

Accepted Answer

Yes. Every Soundsulate MLV roll is made in the USA.

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Mass Loaded Vinyl 1 lb MLV Soundproofing Barrier for Walls, Ceilings and Floors, STC 27 Sound Insulation, 1/8 in Thick, Made in USA, 4' x 10' Roll (Covers 40 sf)

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