One can create a cathedral ceiling as a do-it-yourself homeowner using easily vented, insulated roofing panels. Such panels give you a great deal of insulation value (as high as R40) and include two spacers, allowing for venting, and are simple to nail into the right place. Certain panels, known as strong stress skin panels, are made of drywall or wood paneling. You can create a cathedral ceiling that provides excellent insulation very simply and quickly.