Residential Roof Deck Drawings

Building a shed roof over a deck.

Residential roof deck drawings.

If you choose to add a roof to an existing deck you may need to add additional supports so it can hold the weight of the roof. Adding a roof to your deck is best done as the deck is being built. The most common approach is to use a heavy gauge epdm membrane typically 60 mil as the roofing membrane usually placed over rigid insulation. This article discusses rooftop deck construction details to avoid building leaks or rooftop deck safety hazards.

We include walk on roof surfaces roofing membrane to use below a rooftop deck and construction of rooftop deck railings and posts. Some key details for a leakproof rooftop deck are. The drainage system flashing details and waterproofing membrane that go over the structural deck are the key to success. Any use of any plan on this website is at your own risk.

Typical decks are designed to support 55 psf lbs per square foot. Many building departments require a local architect or engineer to design plans for porch roofs because of the increased snow roof and wind loads created by adding a roof. These deck plans plan are not considered valid unless approved by your local building inspector or structural engineer. Many porches use 22 diameter corner and intermediate.

The most common styles are gable hip and shed. Post base connectors. As a result most decks have inadequate footings to support a new porch roof. The footings for porch decks must be larger than deck footings.

Porch decks require 25 additional psf for roof loads for a total of 80 psf.