Before & After Photos

The pictures below show some of Concrete Jack's recent projects, from pumping an entire dump truck load (21 cubic yards!) of grout under the floor inside a home to raising a small area of a garage floor. 

Before                                                                                  After
 
The floor inside of this garage settled just over 1 inch.  Speed was of the essence; a wheelchair bound resident used a ramp over the settled area as his only access in and out of the home.  Concrete Jack was able to raise the garage floor in three hours, which minimized inconvenience for the owner and also resulted in considerable monetary savings as well. 

Before                                                                                  After
 
Same project as above, different view.  Two semi-cured patches are visible in the After picture.  Patches are done to match the existing concrete as closely as possible (these patches are still wet and therefore stand out quite a bit).

Large Void Fill

The two pictures above were taken of a large (up to 3 feet deep) void under an interior floor in a home in McLean, Virginia.  During a remodel, the void was discovered.  Concrete Jack used live video monitoring of the grouting process using the camera shown in the right picture, a shot from which is the left picture.  Concrete Jack's slabjacking crews pumped more than an entire dump truck full of grout under the slab, all through injection ports in the exterior walls.  This enabled the void to be filled in a timely manner that did not disturb any of the other remodel work going on inside the house. 

 
Live video monitoring allowed Concrete Jack's slabjacking professionals to know where grout was moving and how quickly.  The red arrow in the left picture points to the grout moving out from the end of injection needle.  All access and monitoring was done through the hole made in the floor to move a toilet, which is when the voids were discovered by construction crews.  The void was caused by settlement of the fill soil in a somewhat unique construction method:  A full depth basement was dug and built with poured walls, one of which bisected the house back to front about 25 feet in from the left wall of the house.  The left half of the basement was filled in with uncompacted soil, while a floor was poured in the other half of the basement, which was then finished.  A slab was poured on top of the filled half of the basement, the fill then settled, creating the void that Concrete Jack's crews filled. 

Before                                                                                  After
 
This unique project required two methods of repair together.  The settled floor was an addition which was added onto the back of a house, where the floor was poured to match the elevation of the concrete floor inside of the interior house (green line).  However, the parquet floor was left intact on the original floor, so when the addition was built a skim coat was used on top of the new floor to feather out the elevation difference between the top of the parquet and the top of the concrete (don't worry, we thought it was complicated, too).  Over time the addition floor settled about an inch (red line).  One of Concrete Jack's slabjacking crews removed the skim coat, raised the floor to its original level and then reapplied a skim coat to feather the edge between the parquet and the top of the addition floor.  The owners had the carpet pulled at 9am, Concrete Jack raised the floor and completed the skim coat all by 4pm, and the carpet was restretched at 5:30pm. 

Before                                                                    After
 

 
The two sets of before and after pictures above are of a garage floor that settled approximately 9 inches.  As the floor settled the water heater's core pulled out (the pipes were connected to the wall, the water heater was sitting on the pedestal, which rested on the floor).  The homeowners had a new water heater installed with the floor at the lower level, but it continued to settle.  After the water heater was removed, Concrete Jack's crews raised the floor back to its original level quickly and efficiently, the water heater was then reinstalled with much shorter pipes coming out the top.  The home was without hot water for around 6 hours, but this is much less than it would be if the hot water heater lost its core again due to continued floor settlement.  The arrows and lines on the photos are in the same positions on the wall in each of the four photos.