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SmartJack Installation Project: Sagging Floor Repair Location: Nolensville, TN



William Z recently called The Foundation Specialists regarding signs of foundation failure he noticed in his Nolensville, Tennessee home. Over time, William and his wife watched a small crack on the second floor of their home spread until it was so severe that it spanned almost the entire wall. He informed us that he was considering fixing the crack itself before calling us. This would have provided a short-term cosmetic fix, but it would not address the true cause of the problem as further settlement of the home would continue.


The crack was located on the ceiling and directly in the center of the home. Upon inspection, our specialist noticed that the floors were sagging towards the center of the home, which was likely the cause of the severe drywall cracks located upstairs. After examining the crawl space, he noticed that there was no support for the floors located near the center wall of the home, just on the sides.



After a thorough inspection of the home, TFS specialist, Kolby Penton, recommended the use of our patented SmartJack System from Supportworks for the sagging floor repair. The fully adjustable SmartJacks are installed under the home where supports were not previously located. Once installed, the jacks are adjusted to the right height to instantly bring sagging floors back to their original position, as well as, provide added support for the home.


The proposed plan was to use 3 SmartJacks attached to a steel I-beam. The I-beam would be positioned across 11 pieces of steel tubing. The pieces of tubing were positioned along floor joists under the home. This is done to distribute the pressure from the jacks more evenly and prevent it from causing a break in the floor joists.


The First step of this process is to dig holes where the jacks will be placed. The 2’x2’x1’ holes are dug and are then filled with gravel to provide a stronger foundation for the SmartJacks which will make them less susceptible to things like erosion or shifts in the soil. It takes about 5 buckets of gravel to fill each hole, ensuring that the SmartJack placed on top will be there to stay.


Once the holes are dug and filled, the team places the base plates for the jacks to make it easier to line up the beam above correctly. They then begin installing the steel tubing and I-beam. The team ran into an issue when they realized that the tubing they had wasn’t long enough for the joists under the home. This is crucial as the tubing wouldn’t be able to reach to the trusses of the joists and could risk the pressure from the jack being too much and breaking them. Our crew was determined to finish the job and ended up substituting I beams for the steel tubing.


The 10’ I-beams were cut down to about 8’6” each and then suspended with wire flush against the floor joists. After these were installed, the supplemental beam that actually contacts the jacks was suspended horizontally across them. The distance from the beam to the ground was measured in each jack location and the SmartJacks were cut to the appropriate size. After all jacks were cut to size, they were installed between the base plates and the supplemental beam above.


Finally, one of our production crew members walked through the house with William and communicated with the other crew member underneath on how to adjust the jacks. After allowing 3-6 months for the wood to settle, William should be able to repair the cracks in his drywall with no problem. After it was all said and done, William Z and his family were thrilled with the job stating “I’m glad we know it was done right!”

Project Summary Specialist: Kolby Penton Team Leader: Brandon Robbins Materials Used: I-Beams (12), SmartJacks (3)