In some 0.74oz cuben roll top drysacks I've used, aggressive rolling (ie. to minimize the volume of a sleeping bag) can eventually lead to a de-lamination of the material. This sort of high strain/low radius rolling is not something you'd likely do when rolling a shelter, but I mention it in case anyone is aggressively rolling their shelter to fit into a small stuff sack. I think the large radius rolls of a shelter would likely never pose a problem, but it's possible something might happen over the years if you're really straining the material.
Similarly, I'd avoid crisp and repeated creasing of the shelter, as again you could weaken an area that starts to delaminate.
So I normally fold my shelter a few times into a smaller area and then roll, but I take it easy. No need for heroics.