DIY Arch Window Coverings


Arch windows are designed to be architectural accents to a room. Sometimes, though, an arch window allows too much sunlight into the room, damaging belongings and raising the temperature in the summer. The need for privacy may also make it necessary to cover the window. You can create a window treatment for an arch window that will allow you to keep the architectural interest of an arch window, while also providing light control and privacy.

Things You'll Need

  • Newspaper or butcher paper large enough to cover the arch portion of the window
  • Masking tape
  • Marker
  • Scissors
  • Tape measure
  • Decorator fabric
  • Lining fabric
  • Thread
  • Sewing machine
  • Straight pins
  • Arch curtain rod
  • Tape a sheet of newspaper or butcher paper to the wall around the window. Make sure that the entire arch of the window is covered.

  • Use the marker to trace the outline of the arch on to the paper. Take the paper down from the wall.

  • Measure and mark a new line 3 inches out from the first line. If your curtain rod is wider than 1 inch, you will need to add more to your pattern accordingly.

  • Measure 3 inches from the bottom of the second line on the paper on each side, and mark a line straight across at this point. This is the pattern for your new window covering.

  • Cut out the pattern on the marked lines.

  • Lay the decorator fabric out on a flat surface right side down. Lay the lining fabric on top of the decorator fabric, right side up. Smooth out any wrinkles.

  • Pin the pattern to the fabric. Pin through both layers at once, and keep the fabric smooth as you work.

  • Cut out the fabric following the pattern edge. Remove the pins and the pattern from the fabric.

  • Pin the decorator fabric to the lining fabric around the edges, wrong sides together.

  • Fold the bottom edge up 1 inch. Pin into place and press the hem. Fold the bottom up another 2 inches and pin into place. Iron the hem. Stitch on the sewing machine 1/2 inch from the upper folded edge.

  • Fold the top curved edge down 1 inch. Pin into place and press the hem. There will be folds in the fabric as you fold it down. This is the result of folding a longer line to fit a smaller line. Space these folds out evenly over the length of the seam, or cut small notches out of the curved edge of the fabric at 1 inch intervals.

  • Fold the top curved edge down another 2 inches. Pin into place and press the hem. Stitch 1/2 inch from the top curved edge. Sew another seam 1 inch from the first seam.

  • Mount the arched curtain rod according to the manufacturer’s directions. Slide the curtain on to the curtain rod and attach the rod to the mounting hardware.

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  • Photo Credit black arched window image by hazel proudlove from
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