Stringing or restringing Roman blinds can be quick and easy. The placement of loops at measured intervals along the inside pleat-seams and three lengths of cord that work together creates the signature folded look for which Roman shades are known. The stringing/restringing process is the same for both soft and rigid Roman blinds.
Gather all materials before starting. Make sure that the rings are 1/2 inch or less in diameter and that you have three times the number of pleat-seams on the shade plus three. Make sure the each length of cord measures three times the shade height plus the shade width.
With the wrong side of the shade facing up, measure the length of the shade and divide evenly into thirds. Draw a vertical line from top to bottom with the tailors' chalk or disappearing ink fabric pen.
Hand-sew the rings to the bottoms of the pleat-seams where the marked line and pleat-seams intersect.
Cut the cord into three equal sections and make a large knot in each at one end that will not pass through the bottom ring.
Thread each cord through the rings vertically letting the knot stop at the bottom ring. Thread the centre cord and cord furthest from the side where the cord operates across the top of the shade and through each eye where the blind and mounting batten meet.
Thread all three lengths of cord together and thread through the operation-side eye. Thread all three cords through the acorn, knot the cords together and trim so that the knot is hidden inside the acorn.
Replace the shade in the window; pull up the shade and tie it onto the cleat.
If you are simply replacing rings on a previously strung Roman shade, you can mark where the previous rings were and use those as a guide for placing the replacement rings. Be sure to buy enough cord to allow for a good, large knot at the end of each bottom ring and still have enough allowance to pull the shade up. If you have small children, instead of securing the blinds with an acorn, use a cord catcher, or place the cleat up high.
Purchase a needle to match the type of fabric you are working with. Use thicker needles and stronger weight thread for thicker fabrics. To make your stitches unnoticeable from the front, when sewing, be sure to only sew through the back layer (the wrong side) of the Roman shade. Be sure to use the appropriate thread weight for the type of fabric that you choose.