DIY: Sound Dampening Window Treatments

Written by kate sheridan
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DIY: Sound Dampening Window Treatments
Windows are the primary way sound travels into your home. (Thomas Northcut/Photodisc/Getty Images)

Your windows are a great source of light and heat, as well as cooling breezes and the sounds of nature. They also are a home's primary source of unwanted noise, allowing unfiltered sounds to travel from their source into your home. Single-paned windows will stop only some light and noise from entering your room. Window treatments, including acoustical plastic film and sound-absorbing curtains, will help dampen unwanted noise. Heavy velvet theatre curtains layered over an underlying pair of acoustical curtains will create a reinforced sound-dampening barrier.

Skill level:
Moderately Easy

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Things you need

  • Acoustical plastic film
  • Scissors
  • Magnetic tape
  • Measuring tape
  • Fabric wall covering
  • Regular curtain rods
  • Extended curtain rods
  • Acoustical curtains
  • Velvet theatre curtains

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  1. 1

    Cover your windows with acoustical plastic film. Cut the plastic to fit the window with about 3 inches excess on all sides. Secure the film with magnetic tape.

  2. 2

    Treat your window as an extension of the wall. Cover the window area with a decorative fabric wall hanging that complements the room colour and decor Fabric will help absorb sound and prevent sound from entering and leaking out of the room.

  3. 3

    Install a set of regular curtain rods above the window to hang one set of sound-dampening or acoustical curtains. Install an extended curtain rod that is longer and at least 2 inches wider than the first rod.

  4. 4

    Hang a set of heavy velvet theatre curtains on your extended curtain rod. The 2 inches of space between the two sets of curtains will create a barrier that traps noise and prevents it from entering the room.

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