Does anyone know where I can purchase a smaller piece of foam board, 5'x2'? Lowes sells giant sheets for insulation. They are huge. Even with my 5'x2' cut, it'll leave me with a ton of leftover.
I'd try office supply stores or craft stores. I've bought foam board from both in the past but I don't know if the foam boards they carry are that big or thick enough for your purpose.
