Making a very long band - longer than my weaving space!

Hi, I have only about a 4 foot space to do my weaving, but I want to make a band which is longer than that,

Is there any way to make the warp longer, but roll it up somehow so I don't have to have the whole warp stretching out across the room the whole time?

Do I use the same method from "rolling up" for the finished weaving?

And how do I go about getting the warp ready? Do I need a warping board or something?