Profile: Woodshop Cupolas, Inc. produces hand crafted woodshop cupolas. We work with louvers. Our standard roof is made with four sheets of 3/4-inch exterior plywood mitered at the corners and sealed with waterproof adhesives. Our deluxe proof has a 3/4-inch exterior plywood soffit to hold rafters covered with 1/4-inch bent plywood. Our cupolas are designed for ventilation.