Do-it-yourself soundproofing for curtains

Written by katherine harder
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Do-it-yourself soundproofing for curtains
Thick fabrics like velvet buffer the sounds coming through your windows. (Hemera Technologies/ Images)

The main purpose of curtains is to block light and dress up windows, but some curtains also provide insulation and muffle sound. These curtains are lined with heavy soundproofing fabric. You can inexpensively improve the soundproofing qualities of your curtains by adding this liner yourself. Your DIY liner will also protect the curtains from sun damage, which may extend your window treatment's lifespan by years.

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Things you need

  • Measuring tape
  • Sewing scissors
  • Heavy suede, felt or velvet lining fabric
  • Ironing board
  • Iron
  • Pins
  • Sewing machine
  • Matching thread

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  1. 1

    Remove your curtain panels from the rod by either pulling their tab-tops or pocket-tops off the rod or unclipping them from their curtain rings.

  2. 2

    Lay a curtain panel over your workspace and measure the panel vertically and horizontally.

  3. 3

    Add 10 cm (4 inches) to the length measurement to get your curtain liner measurement. Subtract 5 cm (2 inches) from your width measurement. Note these final measurements.

  4. 4

    Plan to make your liner's width slightly smaller than your curtain panel's width so you can overlap the curtain's edges over the liner's, creating a uniform appearance from a side view.

  5. 5

    Cut your lining fabric to match your final liner measurements. Make two pieces, or one for each curtain panel.


  1. 1

    Place the bottom of one of your liner pieces over the ironing board with the wrong side facing you. Heat up your iron to the appropriate setting for your material.

  2. 2

    Fold the bottom edge upwards 2.5 cm (1 inch) to create a new, folded bottom edge. Press along this line.

  3. 3

    Fold upward again another 2.5 cm (1 inch) to create yet another folded bottom edge, and press again.

  4. 4

    Pin the double hem in place, and then straight stitch along the length of the folded hem. Remove all the pins.

  5. 5

    Repeat this process with the other panel's bottom edge, as well as the top edge of both panels.


  1. 1

    Place a curtain panel over your workspace with the panel's front facing you. Set a liner panel over the curtain panel with its front facing the curtain panel. Match both panels' left edges, as well as the top and bottom edges. Pin the left edge into place.

  2. 2

    Stitch down the length of the pinned left side, about 2.5 cm (1 inch) away from the edge. Remove the pins. Repeat this process with the right edges of both panels. Turn the "tube" inside out, so both fabrics' "right" sides face outward.

  3. 3

    Spread the newly lined curtain over your workspace. Face the liner side towards you, which should have a 2.5 cm (1 inch) border of curtain fabric running up each side. Hand-straighten these borders and press them into place.

  4. 4

    Straight stitch along all borders of the curtain panel, about 2.5 cm (1 inch) away from the edges. Repeat the process for the remaining panel, and then reattach your curtains to their rod.

Tips and warnings

  • Double up on volume for extra sound proofing. Install a double rod and use two sets of heavy lined curtains. Install curtains along the entire wall for the most impressive sound dampening results.

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