I have a 20 year old deck. One of the foundation posts (4×4) has sunken about an inch. The 4×4 post goes into the ground where it is affixed in concrete.
The 4×4 post is notched at the top and two carriage bolts hold it to the beam. The beam is two 2x10s.
I'm thinking the best way to correct the issue is to jack up the three joists that are sunken and put spacers between them and the beam. Is this good? If so, what should I use as a spacer? If not, any suggestions?
Best Answer
What I ended up doing is getting a 12 ton hydrolic jack from Lowe's for $50. Stacked a bunch of lumber up to the beam, put the jack on the lumber, carefully jacked up the beam up off the post until the level sitting on my deck went true. It was raised exactly 1 1/2 inches. So I took a spare, pressure treated 2x4 and put it between the post and the beam. Then I lower the jack, check for level and secured the spacer with hurricane brackets. After I got the good jack, the whole thing took about 1.5 hours.