Home Mass Loaded Vinyl EnviroFlex™ 2 LB Mass Loaded Vinyl
EnviroFlex Mass Loaded Vinyl

ENVIROFLEX™ — 2 LB MASS LOADED VINYL

2 LB MLV —
STC 32 STANDALONE.
STC 50+ IN FULL ASSEMBLY.

Maximum isolation for home theaters, recording studios, and mechanical rooms. Twice the mass of 1 LB where bass and low-frequency noise are the primary problem.
STC 32 standalone STC 50+ full assembly Maximum isolation
1/4"Thickness
2 LBPer square foot
STC 50+Full assembly
Free shippingCommercial materials shipped direct
Free shippingCommercial materials shipped direct
Free shippingCommercial materials shipped direct
Free shippingCommercial materials shipped direct
Not sure if you need 1 LB or 2 LB? Most residential projects use 1 LB. 2 LB is for theaters, studios, and mechanical rooms.

2 LB MLV — SERIOUS SOUND CONTROL

Choose 2 LB when maximum mass and low-frequency control are more important than flexibility. Select the roll that covers your project with the fewest seams.

2 LB MLV — STC 32

Maximum isolation for theaters, studios, and mechanical rooms.

3 roll sizes

DON'T FORGET MLV SEAM TAPE

Seal all seams for the best sound-control performance. One roll is typically recommended for every 2–3 rolls of MLV.

Shop seam tape

HOW TO CHOOSE — 1 LB OR 2 LB? WHAT SIZE?

Choose 1 LB MLV when:

✓ Apartment walls and shared walls
✓ Home office soundproofing
✓ Automotive, doors, floor, wheel wells
✓ Pipe lagging and soil stacks

Choose 2 LB MLV when:

✓ Home theaters targeting STC 50+
✓ Recording studios and bleed control
✓ Mechanical rooms, HVAC, generators
✓ Low-frequency bass is the priority

Sizing guide:

✓ Measure each wall: length × height = SQ FT
✓ Add all areas together, plus 15% for waste
✓ Select rolls that cover adjusted total
✓ Seal seams for best results