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Step 3 · Install Sound-Dampening Underlayment

Prepare the floor surface by ensuring it is clean, dry, and level. If installing over a subfloor, lay the underlayment directly onto it. If installing over an existing finished floor, ensure it is also clean and smooth. Unroll the sound-dampening underlayment material, cutting it to fit the room or stair treads using a utility knife. Ensure seams between sections of underlayment are butted together tightly, or follow the manufacturer's instructions for overlapping or taping. Some underlayments may require adhesive for installation.

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Step 3 · Install Sound-Dampening Underlayment

Prepare the floor surface by ensuring it is clean, dry, and level. If installing over a subfloor, lay the underlayment directly onto it. If installing over an existing finished floor, ensure it is also clean and smooth. Unroll the sound-dampening underlayment material, cutting it to fit the room or stair treads using a utility knife. Ensure seams between sections of underlayment are butted together tightly, or follow the manufacturer's instructions for overlapping or taping. Some underlayments may require adhesive for installation.

Videos for this step

Install Acoustic UnderlaymentInstall Floor CoveringInstall Underlayment

Tools and Materials

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How to Reduce Noise from Stairs and Upstairs Floors

Step 3 of 7·16.5 hr left

Inspect for Cracks and Gaps
60 minutes3 items
Address Floorboard Creaks
90 minutes6 items
3
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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