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The PNA Joint Stabilizer optimizes operational productivity and profitability in warehouses and industrial facilities.

Joint Stabilizers offer a fast, cost-effective and permanent solution to rocking joints and cracks in indoor concrete slabs on ground. This uncontrolled movement can cause untold damage to material handling equipment and, if left unfixed, often results in concrete spalling and expensive floor repairs. Rocking joints can also have a significant negative impact on operational efficiency and driver safety, while raising the risk of product damage.

“We go through about 20 load wheels per month just due to the floor” says the facility manager for a national auto parts supplier in New York state.

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Excessive shrinkage and/or curling can cause load transfer problems, leading to spalled joints and cracks that slow down your entire operation.



The Joint Stabilizer eliminates damaging deflection and restores smooth, positive load transfer across joints and cracks up to ½" in thickness.

Joint Stabilizer Benefits

The Joint Stabilizer offers a permanent fix to common joint problems with virtually no disruption to operations during installation.

Service Benefits

  • Increases operational efficiency and productivity
  • Extends floor life while minimizing maintenance costs
  • Minimizes material handling equipment damage and downtime
  • Reduces the risk of accidents and injuries
  • Minimizes the risk of product damage

Installation Benefits

  • Each device can be installed in as little as 10-15 minutes
  • Less mess and cleanup compared to sub-slab injection
  • Floor can be returned to service immediately after installation
  • Proven effective long-term, even under heavy traffic conditions
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PNA’s Joint Stabilizer Beats the Competition

Comparison Chart PNA Joint Stabilizer Semi-rigid joint filler Sub-slab injection Retrofit doweling Full depth joint replacement
Cost effective X X X
Fast, easy installation (less downtime) X X
Withstands long-term heavy traffic X X X
Suitable for use in cracked concrete X X
Suitable for use in poor sub-base and soil conditions X X X X
Suitable for use in curled slabs X X X X
Accommodates concrete shrinkage from temperature changes X X X X
Suitable for use in cold storage facilities X

How the joint stabilizer works

When properly torqued, the Joint Stabilizer exerts 8,000 lbs. (36kN) of pressure on opposing slab segments, causing the panels to move up and down together. An Internal Spring Mechanism accommodates any joint expansion and contraction caused by seasonal temperature changes.

Part No. Length Diameter
JS5 5" 3"
JS6 6" 3"
JS7 7" 3"

Select the appropriate size so that the length of the cylinder is at least 1" (25 mm) less than the slab thickness. The JS7 cylinder can be used on floors up to 12 inches (305mm) thick.

Easy Installation


Core drill and clean hole


Insert Joint Stabilizer cylinder


Tighten to 85 ft-lbs (115 N-m)