I have a 15 year old ranch style house located in central Iowa. There is a concrete porch (6' X 30') across the front of the house with a corresponding roof overhang. There are 4 wood posts across the front, embedded into the concrete, that provide support for the roof overhang. The current posts are 6X6, and apparently are not treated, since they have started rotting where they meet the concrete. It appears the the posts were put into place, and then the concrete was poured around them.
So it's time to make some repairs.
It may not be practical to completely remove the posts so I thought I would do one of a couple things. Note-I'll make sure the existing roof is braced before I remove the posts
1. Cut each post about a foot or so from the porch roof, cut a section out of the poured concrete porch so I can pour a footing for each post, and then use a metal beam (like an adjustable floor support in a basement) between the footing and the existing wood post. I would then box in the steel beam for aesthetics with composite lumber. I'd then form up the sections of porch that I cut out, and then pour new concrete into the voids.
2. Cut the existing post about a foot from the bottom, cut the porch concrete enough to pour a footing, and then add in a piece of 6X6 treated lumber between the footing and the existing post. This would preserve most of the original post. I'd then form up the sections of porch that I cut out, and then pour new concrete into the voids.
If #2 is a possible solution, are there any problems sitting a regular wood post on top of a treated post? I'd prefer not to do this again in a few years if there might be issues with the regular wood/treated wood connection.
Any other possible ideas? I haven't started this project yet, so I'm open to suggestions.