In the second Bench Test contractor Jeff Burns uses WonderBoard by Custom Building Products.
I recently used a product called WonderBoard, manufactured by Custom Building Products, of Seal Beach, Calif. It enabled me to turn a residential project into a one-step process with no waiting period before the final color coat is applied. For 34 years, the product has been used entirely as a backer board for tile, marble and stone-1/2-inch-thick cement aggregate that is enclosed in panels on both sides by fiberglass. The product has worked well as a water-repelling backer board.