With this initially setup i was able to get about 7 8.
How to jack up a porch roof.
Stand a post up in the bracket and hold a level on its side.
Put your level on the porch roof beam parallel to the front of the porch and that is probably what you ll find happened.
The 4 ton jack that came with my ford transit van was more than sufficient to raise the porch a couple of inches.
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Check to make sure the porch beam is level by raising or lowering the jack.
The jack did all the work.
If that is the case don t bring the high side down like you did with the deck.
Once it is plumb mark the position on the porch roof.
Position a mounting bracket at one of the marks on the bottom of the porch.
Stakes go down about 18 to 24 could also use a permanent steel or wood posts in place then just build around it if your not changing out the footing.
Fortunately the adjustment i needed to make was a common size.
Position the post and use the jack to raise the porch beam slightly until the old column can be removed.
I set it about a foot out from the house as not to interfere with where i needed to work on the column.
Measure from the porch beam to the jack and cut the 4 4 to just under this length.
Raise the sagging side back up where it belongs and you ll be able to install equal length posts.
1 or 3 of a porch rework more buil.
Using 8 x 8 x 8 half cinder blocks i build a column to support the jack i would use to raise the porch.
In this video i jack up the corner of porch roof so that i can successfully install a section of half round gutter.
Using a scrap piece of durock cement board i cranked the jack up to give it pressure enough to hold it in place.
I started by sitting the jack on the porch floor immediately above the porch s skirt board.