Synopsis: Building a deck above a porch roof allows for sheltered space below and views from above. In this article, builder Emanuel Silva shares his method for building such a deck, which begins with a leak-proof low-slope roof of EPDM rubber. Hardwood decking is then fastened to tapered pressure-treated sleepers that rest on additional strips of EPDM added to protect the roof from abrasion. Silva also demonstrates how to detail the roof edge and to flash the posts.