A plywood subfloor will bridge any minor waves in the existing floor and leveling compound would help too.
How to fix a sinking barn floor.
We use a few different several foundation repair methods.
The star of the video relates his supposition as to there being either no or inadequate concrete beneath the sinking columns.
He also tells us the sagging pole barn is in frost country.
Similar to the repair on the column you can also do the same with a truss.
Essentially these piering methods transfer the weight of your home to more stable soil.
Check your roof at least once a year to see that it is watertight.
Keeping a watertight roof is essential.
How to fix a sinking foundation.
Go further only as needed.
You will have to make sure your joists can handle the addition of considerably more weight from the plywood subfloor and any floor coverings.
Repair the roof once the foundation is set and the building will not move.
Floors sag because the load bearing posts supporting a house beam are failing and or the footings holding those posts are undersized and sinking.
His restorative process is all well and good until he pours what would be otherwise known as a top collar around the column.
On the top side of the floor another fix it idea to lay down new hardwood over the existing floor.
If the column is in ground you can dig down until you get to the pad and run a column alongside it.
If you have a concrete floor you can put the column up right alongside the existing pole and bolt it in.
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.
Thre ways to fix a sagging or sloping floor.