Here s what to do.
How to use post for roof.
Once both of the brackets are secured set a post into them.
Use 2 inch carriage bolts to secure the posts to the mounting brackets.
Measure the distance between the top of the jack and the roof.
Cut two 2 by 4 boards with a circular saw that are 2 inches shorter.
Ideally you should find the rafter first underneath the sheathing locate by feeling the nails.
The beams support the roof rafters or joists which in turn hold the roofing material.
Install another bracket in this position.
The main structural members of patio and deck overheads are posts or columns and beams which run from post to post or from post to ledger.
For a freestanding roof begin with the corners and then erect all of the intermediate posts.
Then attach the tool into rafter by driving couple of 16d nails.
Continue installing porch roof supports.
Once it is plumb mark the position on the porch roof.
Place a hydraulic jack underneath the roof near the damaged post.
Roof jacks make it easier to set roofing and increase safety for you by providing stable surface.
This post and beam design is secured with a post cap.
Repeat this procedure so that all the columns look exactly the same and have the same dimensions.
Measuring posts for a freestanding roof differs in only one respect from measuring for a house attached roof with the attached roof you ve already defined the roof height at the ledger line.