Polyurethane Concrete Raising

Repair Over Replace with Polyurethane

When concrete settles, it's a major safety hazard and takes away from the beauty of a property. Settled concrete can be sunk, lopsided and cracked. It's advisable to repair settled or broken concrete as soon as possible. Luckily, concrete leveling costs half as much as a replacement, and Mr. Level has the expertise, equipment, and service you need. 

How does polyurethane raising work?

There is a polyurethane foam that is used to fill voids, stabilize, and raise concrete through injection underneath the concrete. A hole is drilled into the concrete slab at 5/8" to reach the subgrade. The subgrade is the material that lies beneath the concrete.

After the hole is drilled, the material needs to be injected. This is done through a delivery port installed by our workers, the injection gun is made to be connected to this port after its installation.

How does polyurethane raising work? | Mr. Level

The material that is injected into the slab is a polyurethane foam that expands in a matter of seconds after placement. This allows us to work precisely and incrementally as we wait 10-15 seconds to monitor the raising of the concrete. The careful process prevents over raising the concrete and grants the most precise and level outcome!

Learn more about our polyurethane foam materials here.


Causes of Concrete Settling

Many people have the misconception that broken or settled concrete needs to be replaced when you can usually level it for half the cost! See what causes concrete to settle below…

  • Incomplete or improper base compaction. This happens before the concrete is poured and pushes settlement to happen quickly as the slab is weighted and further compacts the base after it finishes curing.
  • Cold Climate. Freezing temperatures cause concrete to rise and heave and it usually does not re-settle in its original place after the ground thaws, leaving major trip spots.
  • Hot Climate. On the other hand, extreme heat and droughts can affect subgrade like clay, causing it to shrink and settle the concrete after re-expanding with hydration.
  • Erosion. This is often a fault of the bad schematics of sewers, downspouts, and rain drains that leak excess water into base materials, causing concrete to settle.
  • Vibrations. Concrete can move when it's put under heavy weight from transportation vehicles, machinery, or heavy traffic 

Repair Over Replace with Polyurethane Foam | Mr. Level

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