Styrofoam help

[Slick Fork]

Hi there,

I've got a new 110 gallon tank coming, it's foot print is going to be 24"X48". I have been having zero luck finding 1/2" styrofoam that's in a 4x8 sheet. I've tried Rona, Home Depot, Co-Op, Home hardware.... everybody has 1" stuff but that seems to thick to me. Everybody also has it in a 2'x8' sheet but I have a couple of maybe just mental issues with that. I would like to have a half inch of "wiggle room" all around the tank so I'm kind of frowning on a single 2x4 piece. Would I be ok to use 2 pieces to get the coverage I want on the stand? Or has anybody seen any 4x8 sheets in central alberta?

Thanks