How to cover a cushion with square corners

Written by linda roche Google
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How to cover a cushion with square corners
A square-cornered box cushion adds to the formal design style of the chair. (bright red armchair viewed from below image by nextrecord from

Square-cornered cushions generally give furniture a more tailored, formal look than rounded or overstuffed cushions. Though covering a cushion with square corners can present a challenge, having the opportunity to choose from a variety of fabrics and patterns to coordinate the look you want makes it well worth the effort. Hard-to-find patterns and colours can easily become part of the overall design scheme of your room. In addition, re-covering the same furniture cushions over time allows you to change up your design style without the added expense of buying new furniture every time.

Things you need

  • Foam rubber cushion with square corners
  • Upholstery material
  • Upholstery thread
  • Straight pins
  • 1.2 cm (1/2 inch) sew-on Velcro
  • Polyester batting
  • Sewing machine

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  1. 1

    Lay the fabric on a flat surface. Place the foam cushion on top of the fabric. Move one corner of the cushion toward one corner of the fabric.

  2. 2

    Pull the fabric up around all the cushion sides so that the fabric edges rise above the cushion edges 1.5 cm (5/8 inch). Cut the piece of fabric accordingly. Lay the piece of fabric right side down over the cushion square.

  3. 3

    Centre the fabric over the cushion so that all the sides are even and aligned with the cushion edges. Pinch together the two folds of excess fabric at the bottom of one corner, pinning it so the fabric hugs the cushion corner all the way to the top. Repeat this step with the other three corners of the cushion top fabric.

  4. 4

    Measure the dimensions of the square cushion and add 1.5 cm (5/8 inch) to each of the four sides. Cut a piece of fabric according to the above dimension. Sew a straight stitch along each of the pinned corners of the top fabric to form a fitted cushion cover.

  5. 5

    Place the fitted cover over the cushion, wrong side out, to check that the corners are snug. Resew any corners that are not tight. Trim the excess fabric off of each corner 6 mm (1/4 inch) from the seam.

  6. 6

    Measure the length of one of the sides of the cushion cover from seam to seam. Cut one piece of Velcro accordingly. Turn the cushion cover right side out, and place one of the halves of Velcro face up along one of the bottom edges of the cover.

  7. 7

    Pin the Velcro piece in place, making sure that the Velcro edge is evenly aligned with the fabric edge. Sew two straight stitches parallel down the outer edges of the Velcro to secure it to the cushion cover. Lay the square of fabric from Step 4 on a flat surface, and place the other half of the Velcro strip on the fabric along one of the edges.

  8. 8

    Pin the Velcro piece in place so that the outer edge of the Velcro is evenly aligned with the fabric edge underneath it. Sew two straight stitches parallel on the outer edges of the Velcro to secure it to the fabric. Turn the cushion cover inside out, and pin the fabric bottom wrong side out along the perimeter of the cushion cover so the sides with Velcro match each other.

  9. 9

    Sew a 1.5 cm (5/8 inch) seam along the perimeter of the cushion cover without sewing the Velcro side. Turn the cushion cover right side out and fold the side with the Velcro under. Sew a straight top stitch 9 mm (3/8 inch) from the edge to secure the Velcro in place, then insert the foam cushion and close the opening.

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