This way of finishing a facing with an invisible zipper can be used for any facing, like a neckline, skirt or pants waistline. I always use a small flat button and fabric loop made of bias cut lining to reduce the stress of the zipper.
Cut the facing the same length as the waistband including the seam allowance.
Sew the facing at the waistband till about 8 cm from the zipper.click here
It will look like this click here
and click here
If you want to use a button and loop, start with sewing the loop at the right part of the zipper tape about 1 cm below the zipper pull click here
The facing seam allowance at the top should be moved/angled 1 cm from the seam allowance from the waistline, the end of the facing must match the seam allowance from the skirt click here andclick here Sew the facing next at the zipper tape.click here and click here leave the last 1,5 cm unsewn , so you can insert the lining at the facing bottom later.
Push the zipper coil flat and fold the zipper to the facing part. click hereStitch the upper part facing at the waistline but do not backstitch yet click here Turn the facings to the inside click here
and click here and check if your waistline facing is even click here If the facing is even on both sides turn again to the outside and stitch over the previous line and do backstitch and cut the corners at an angle and grade the seams click here
Turn the facing again to the inside and sew the button on.