Building Roof Deck Plan

Install post base connectors to attach the support posts to the deck frame.

Building roof deck plan.

Do not attach the post base to only decking. Porch decks require 25 additional psf for roof loads for a total of 80 psf. Shed roof a single sloping surface that starts at the exterior house wall and ends at support posts. Typical decks are designed to support 55 psf lbs per square foot.

Make sure the frame has the appropriate blocking to ensure a solid connection. Building a shed roof over a deck. Many porches use 22 diameter corner and intermediate footings. How to build a roof over a deck step 1.

Build the frame of the roof on the ground. Lift the box. Tie your existing deck posts into the roof by extending your corner posts with the 4 by 4 lumber. Shed gable and hip.

Frame up a box the size of the outer dimensions of your deck using 2. As a result most decks have inadequate footings to support a new porch roof.