How To Jack Up A Porch Roof To Replace Posts
Remove the rotted post and lay it across two sawhorses.
How to jack up a porch roof to replace posts. Use a reciprocating saw to cut the top of the post free from the overhead beam. In raising the roof i knew was going to have to reset the roof s flashing as it meets a sidewall of the house. Measure from the porch beam to the jack and cut the 4 4 to just under this length. Use a 4x4 post cut to length to hold the porch roof in order to both remove the old column and install the new one.
Things to consider with jack up a porch roof the prep. Use to cut the new column to length. Make sure your jack is rated sufficiently to support the roof. Use a combination square to draw two perpendicular lines through the mark aligned with the front and sides of the landing.
To do so we replaced our 2x6 supports with jack posts which can be found at most local home centers. Unscrew and remove the handrail attached to the rotted porch post. So to begin i removed the existing counter flashing running about 5 courses up this was as easy as finding nails and prying. Use the jack to raise and lower the 4x4 and porch roof.
Temporarily support the porch roof on either side of the rotted post with a hydraulic jack and a long 2x4 post. Position the post and use the jack to raise the porch beam slightly until the old column can be removed.