To safely remove the old posts before installing the new ones the porch roof needs to be securely supported.
Jacking up a porch roof to remove old columns.
Slowly raise the jack until the column is free from the roof or beam.
Bottle jacks are available in a variety of shapes and sizes.
We used a rough cut 4 4 post as the jacking piece between the jack and the porch header.
The jack can be adjusted up or down until the roof is level.
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I purchased it at harbor freight tools love harbor freight for certain types of tools like these.
Do not raise the roof any further than necessary to remove the porch column.
Position a jack directly under the porch beam next to the column.
How i replace rotting supports beam and posts under deck.
In order to do this we removed the flooring up to the column and then placed a 20 ton hydraulic bottle jack on top of the brick foundation under the porch.
Slide the column out from underneath the roof.
Measure from the porch beam to the jack and cut the 4 4 to just under this length.
Position the post and use the jack to raise the porch.
This jack has a maximum extension around 8 inches and it is about 20.
This is usually done by jacking up temporary post material to take the weight of the roof so that the rotting post or column can be removed.
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Get to the jacking of the porch roof already jack.
Attach a short 2 x 6 board to the end of a 4 x 4 post.
To remove and replace a porch column.
You may hear a little cracking sound which is normal.