Anything involving 20 ton house jacks will take time.
How to jack up a sloping floor.
I d suggest looking at the joists under your floor and then get into the attic and check the roof structure looking for sagging or other abnormalities.
Before you attempt to jack up a sagging or sloping floor it is important to understand why the floor is sagging in the first place.
Stack 8 x 12 blocks two wide in a criss cross pattern until they as close to the bottom of the girders as possible.
Jack up that portion of the house and place new footers.
Once the floor is at the right level jack it up just a little bit higher.
When done right jacking up a house takes a long time.
Don t jack it up too high just high enough to remove the post.
If your sloping floor is caused by improper installation of the floor itself you may be able to simply get the floor pulled up and installed again the right way or put down an entirely different floor.
How much you pay will depend on what s causing the floor to sag type of flooring concrete hardwood etc and how many square feet of floor is involved.
Then measure the distance between the bottom of the level and the level area of flooring.
Slowly jack up the floor.
Depending upon the conditions it is possible to strengthen or repair existing framing members such as floor joists or roof rafters by adding reinforcing material sandwiching the member on either side with plywood is sometimes worthwhile but the plywood must be installed correctly for greatest strength.
It has to be jacked up slowly over days or even weeks to avoid cracking drywall plaster windows and even structural elements.
You cannot jack up a house in one day.
Jack up the floor slightly and knock out the existing post.
Keep an eye on the girder so that it does not get out of position and try to roll.
The average hourly cost for floor repairs is between 75 and 125 for the labor alone.
Use a string to watch the floor come up.
Thre ways to fix a sagging or sloping floor.
March 13 2014 at 10 24 pm.
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Plan on several weeks if you want to avoid structural damage.
Place one end of a level on the high spot and the opposite end to a predetermined level area on the floor.