Knitters help regarding wool

This is one for the knitters or crochet people on here. Has anyone used King cole magnum chunky as I have just finished a knitted item and can’t stop the band border rolling inwards. I have tried blocking with cold water and it works for a while then it starts to roll again. You can’t iron it according to the wool label and was wondering if anyone had ironed it ok.
I am loath to undo it as it looks lovely and took a while to knit. I had thought of adding another knitted band to see if that will rectify it as the band and fronts were knitted in one piece and not separate.
I look forward to hearing any of your suggestions.

What stitch have you used for the band border? Stocking stitch will always roll.

Hi Carol,

It was garter stitch for the band.

ahhh garter stitch can do that sometimes especially if there only a small amount of garter stitch rows.

I find the k1, p1 or k2, p2 works best.

Yes it only had a few stitches, you slipped the first stitch. I can’t decide whether to just undo it or try pressing it and keeping it for myself as it is really nice on.