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Step 4 · Add Mass-Loaded Vinyl (MLV)

Carefully unroll the MLV over the installed underlayment. Cut the MLV to fit the area using a sharp utility knife and a straight edge. Ensure that all seams between MLV sections are tightly butted together. Overlap the seams according to the manufacturer's recommendations, or tape them securely with acoustic tape to create an airtight barrier. The MLV should be installed smoothly without wrinkles or tears.

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Step 4 · Add Mass-Loaded Vinyl (MLV)

Carefully unroll the MLV over the installed underlayment. Cut the MLV to fit the area using a sharp utility knife and a straight edge. Ensure that all seams between MLV sections are tightly butted together. Overlap the seams according to the manufacturer's recommendations, or tape them securely with acoustic tape to create an airtight barrier. The MLV should be installed smoothly without wrinkles or tears.

Videos for this step

Seal Mass Loaded Vinyl SeamsApply Mass Loaded Vinyl (MLV)Install Mass Loaded Vinyl (MLV) Layer

Tools and Materials

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How to Reduce Noise from Stairs and Upstairs Floors

Step 4 of 7·13.5 hr left

Inspect for Cracks and Gaps
60 minutes3 items
Address Floorboard Creaks
90 minutes6 items
Install Sound-Dampening Underlayment
180 minutes6 items
4
Add Mass-Loaded Vinyl (MLV)
150 minutes5 items
5
Install New Flooring or Carpet
300 minutes5 items
6
Reinforce Stair Stringers and Treads
120 minutes5 items
7
Insulate Between Floor Joists
240 minutes8 items
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