How much coroplast?

You can roll it and it will fit in the mini-van. My dad and I rolled a full sheet last week and got it in the backseat of his car. You will need at least a full sheet possibly more. You will need a piece at least 68"x40" for a 2x4 if you don't use connectors and want 6" sides. You will need a piece at least 40"x40" for the loft if you don't use connectors and want 6" sides. I would go ahead and get a sheet and a half.

I'm pretty sure I got my 2x4 and 1x2 out of the same piece of coroplast. But the 1x2 only has one 6 inch wall.

Okay, I'll probably get 1 1/2 sheets, and rool it to fit in the trunk. Thats for your help! I'ad probably want 6 1/2 to 7 inches on the sides though. My pigs are know for "sharing" thae insides of their cage.