if space is a consideration when planning on a brick face for the oven; there is a way to help minimize the bulk of a full brick. Many companies make a thin brick. its not a fake brick made of vinyl but a true brick thats only about a 1/2 inch thick. when the clay is formed its sliced to the thickness and fired as normal.there are even corners. i'm not sure about the price as compared to a full brick but it surely must be less expensive. i'm looking into this to cover my block stand. check out
www.glengerybrick.com