Finishing interior garage walls

I put up masonite, also called hardboard, that had a glossy white coating on it that wipes off easy and is super reflective. It's 1/8 in. thick, I used my electric staple gun with little T-head nails to fasten it up. It comes in 4x8 sheets and cost about the same as a 4x8 sheet of 1/2 in. drywall.