how to build gable roof patio – bing images. square screened in porch with deck in st louis mo, by archadeck. screened decks and porches. how to build a deck roof step by step 012. final touches being put on screen porch roof framing. porch deck designs posite deck hot tub outdoor lighting roof deck attachment roof deck hangers. lots of insulation! in this view are three different kinds of insulation used we used an open cell, spray foam in the roof deck assembly, .