Be sure that the deck floor frame is at least as thick as the entire cross section of the post above and below.
How to frame a deck roof.
Frame up a box the size of the outer dimensions of your deck using 2 by 4 inch lumber.
These are used to attach the support posts to the frame of the deck.
These decks are often referred to as floating as they are not secured in place as a stand alone structure.
Place pier blocks so that the posts will be against the inside of the support frame.
If you like the idea of having the roof above your house s roof you need to make sure the support posts are within 4 feet or so of the original gutter on that side.
Install post base connectors.
2 fix these support posts to your decks original support frame bolts work well.
First you must make sure the roof is strong enough to support 55 lbs per square foot.
Then run joists connecting the front of your roof with the rear every two feet along the length of your roof.
If the posts supporting the roofs are placed directly on the deck structure below there are a few considerations to make.
Before you begin make sure you re matching the house roof pitch angle and overhang for your roof.
The posts should stack directly above a support post below and not within the span of a beam.
For a solid connection you ll have to make sure the frame has the appropriate blocking.