A Watertight Second-Story Porch
With a rubber membrane and careful flashing, you can create an outdoor room above and shelter the living space below.
Synopsis: The arched opening of this upstairs porch dramatically changed the look of the house, but waterpoofing the deck was the key to making it work. The article details the framing of the substructure, the application of an EPDM membrane, and the sleeper/deck on top.
With Long Island Sound closer than a short fly to the outfield in Yankee Stadium, this house was begging for a porch to take advantage of the views. A roof that skirts the second floor offered a choice of locations. But it was obvious that the porch should be above the entry and adjacent to the master bedroom.
Waterproofing is an issue anytime you attach a new feature to a house. On the ocean, strong windswept rain is a good reason for concern. And because the porch is over an entryway designed to shelter the front door, the area below the new porch needs…