This is my Alter-It August post (in September!) as most of these alterations were accomplished last month, although I finished the final fix this past weekend.
It is my experience, as a short-waisted person, that waistbands Do Not Behave. They roll, they wrinkle, they scrunch and fold. I've spent considerable effort trying to make a better waistband. Some sewists recommend narrow waistbands (3/8" or less), or faced curved waistbands that finish the top edge of a skirt or pants. I find these are fine for certain styles and body types, but my style preference is an attached waistband, because most of my bottoms have elasticated backs, and I have a 10" waist-to-hip ratio on a good day. (Most modern skirts are sloped on a 6-8" ratio and gape badly on me).
My go-to for a stable (ish) waistband is to make a 1" finished waistband with Petersham for interfacing. (I had to look back through old posts to find the tutorial link, and it looks like I started using this method in September 2015! How much has changed since then...) The trick is to cut a 4" wide waistband, and make the seam the same width as the Petersham (1" in my case), and then fold over twice before top-stitching or stitching in the ditch to finish the edge. That way you have no lines from a seam allowance, plus the extra layers of fabric provide some stability, particularly in heavier fabrics like denim.
Alas, it does not entirely eliminate waistband rolling, and in lighter fabrics like rayon or linen, it doesn't help at all. The fabric can't stand up to the combination of body heat and sitting right under my ribs. I was pretty frustrated with my skirts by mid-summer, as all had rolled and creased waistbands that washing didn't fix, and by the end of the day felt schlubby and terrible. I decided it was time to crack this monster and figure out how to make a better waistband.
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Petersham I removed from two skirts. One of these was after only a day or two of wear; the other was after several seasons of wearing.
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I did some reading about what others have tried. My experience with fusible interfacing has been a joke--it peels right off and scrunches into a heap at the bottom of the band on the inside, and sew-in interfacing hasn't fared much better. My best experience has been to use quilting-weight cotton as a stabilizer, but that still wants to wrinkle a bit (see the teal skirt, above).
Someone suggested using lawn (which is very tightly woven) in conjunction with Petersham, so I decided to try that first. My lavender skirt had stretched out badly on the first wearing (do not use jersey to interface!) and didn't even fit me. It was more than 2" bigger than any other skirt I owned. So I unpicked the waistband, put in Petersham and a strip of lawn, and made the waistband narrower to accomodate the 1" Petersham. It was okay. It did stay put better than Petersham alone, and seemed better overall, but it still wasn't quite the fix I was hoping for.

Every time I've tried to tackle this problem, I run across a Thread Theory article about Ban-Rol, but until recently, wasn't able to find it in anything but huge rolls for many dollars. I didn't want to spend that much on a big roll if it didn't work and couldn't find anyone selling it by the yard.
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Original 1" Ban-Rol
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Sometime last winter, I altered a pair of suit pants for my husband. He's had this particular suit for a long time, and the construction on the pants was quite interesting to me--they were obviously made with alterations in mind (I suppose if you are going to spend serious money on a suit, you need it to last through body changes!), and the waistband was interfaced with something that looked like Ban-rol. There is a whole discussion to be had about longevity in clothing, and how to build in the possibility of alteration down the line, but that is a whole different rabbit hole.
This summer, I did another search and found The Sewing Place, which offers several different types of Ban-Rol, at a reasonable price, cut per yard. It was the perfect way to try both the original Ban-Rol stabilizer, and the elastic version, which is used on commercially sewn elastic waistbands. (I noticed it on a pair of RTW shorts this summer. The waistband is both comfortable and sits nicely all day).
I started with my red and orange skirts, as they were both ripe for change. I added Ban-Rol to the front waistband of the red skirt (swapping the center box pleat for the more flattering side pleats while I had the waistband off), and inserted the elastic Ban-Rol in the back to see how the two things played together. I stitched three lines through the elastic to secure it. What a difference! The skirt looks so much better now, and I'm much happier to wear it. I also shortened it by 2.5" while I was at it, to bring it to the length of my other skirts.
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With elastic ban-rol all around. The fit is weird.
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The orange skirt was trickier because the waistband is put together a bit differently and the fabric had stretched a bit while I was making it initially, so it was already limp and unhappy. I first tried running elastic ban-rol through the whole waistband, on the theory that if it worked well on my shorts, it should make my skirt better.
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Elastic Ban-Rol. I think in the future I will have to burn the edges to melt them, as the cut elastic loops that run through the white fabric want to poke out. Just sewing over the edge doesn't seem to cut it.
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It was very comfortable, but it also felt too big and didn't sit right on my waist. I worried about it falling down (groundless, given my waist-to-hip ratio, but there it is). So I pulled out the elastic from the front part only, and installed regular Ban-Rol into the front waistband, absent Petersham interfacing. It is...okay.
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Hard to tell, but the ban-rol front plus elastic back is better.
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Earlier this week, I unpicked almost all the waistbands on my summer skirts (including the new Nutmeg skirt, shown below) and installed Ban-Rol alongside the Petersham, and that seems to be the golden ticket. The Petersham provides stability for the fabric (I mostly wear linen or a linen-rayon blend in the hot months), and the Ban-Rol keeps the waistband firm and stable. All.Day.Long.
I'm still working out how to best use the elastic ban-rol, as it is much more comfortable than traditional braided elastic, but it is also much stretchier, so all my metrics about length and fit have to be redone if I use it in the future. It also seems to behave better with several lines of stitching through it, but that also affects how much stretch it ultimately has. The best skirts I have at the moment are my Nutmeg and teal linen skirts, both of which have Ban-rol waistbands in the front and a few channels of 3/8" braided elastic in the back. The other little trick I find with Ban-rol (at least for a retro-fit) is to sew the edges down to keep it from sliding around at the side seams and possibly poking through the top.
Perhaps this will be useful to someone else! Let me know if you have experience with Ban-Rol (either type) and how you use it.