Jack Up Sagging Floor Joist

Well after doing the navy seal crawl up under the house we found that the joists that were supporting that floor were not actually attached to the sill plate any longer as seen in the photograph below.

Jack up sagging floor joist.

1 16 of 140 results for floor joist jack vestil fjb 150 basement floor jack 54 150 height range maximum height capacity lbs 2588 minimum height capacity lbs 11200 4 4 out of 5 stars 194. Make repairs to settling piers and weak joists to fix swagging floors and roof lines. 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. Use the level each time to check the sag on the joists until the sag appears to be gone.

The sagging floor was the symptom and somewhere under the house there had to be a cause. Following the instructions on the jack raise it about 1 8 inch this will typically involve turning a lever near the top or bottom of the jack that twists up the threads. Raise it another 1 8 inch weekly. These reinforcing joists install quickly in crawl spaces with a complete installation taking about a day and provide a permanent solution.

The only tools required is a bottle jack string straight claw hammer circular saw and a light source. Sistering is the process of mating up two boards with bolts nuts and washers so that the new board corrects or supports the other weaker one. Crawl space floor joist jacks. Crawl space joist supports are steel adjustable support posts that are installed to repair sagging floors.