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Pole Setting & Straightening Foam

OsmoSet® High-Density Foam

Pole foam offers many benefits over soil, including greater compressive strength, but it is especially useful in:

  • Rocky soil and dynamited or drilled pole sets that may not produce sufficient backfill material
  • Sandy or sandy loam soils with low compressive strength
  • Difficult-to-access pole sets where transporting fill dirt is not feasible

OsmoSet is a high-density polyurethane water-blown foam designed for setting and straightening distribution and transmission poles. Since OsmoSet foam completely encapsulates the pole, it greatly reduces leaching and soil contamination. It contains no chlorofluorocarbons (CFCs) or hydrofluorocarbons (HFCs), making it safe for both the applicator and the surrounding environment.

Installation in 4 Easy Steps

Images of the pole foam setting process steps

Benefits of OsmoSet

  • Added Strength and Safety - Most soils in the U.S. have a compressive strength of approximately 28 psi.  Foam with a density of four pounds per cubic foot has a compressive strength of 70-80 psi, providing an increased safety factor over the surrounding natural soil of nearly 3:1.  
  • Labor Efficiency - Using foam is less labor intensive than backfilling with soil. There is also no need for tamping, which reduces back strain and injuries.
  • Reduced Environmental Impact - Eliminates the need to transport backfill material to the job site, and reduces soil contamination from leaching of the original treatment.  Reduced hydrocarbon footprint compared to other foams.
  • Reduced Costs - OsmoSet expands at a ratio of 18:1, 20% more than other foams, which means less product is required to fill the space. 
  • Easy to Store & Transport - The patented package design of OsmoSet includes part A and part B mixtures in D-shaped containers that conveniently fit inside the mixing pail with a mixer. This efficient design reduces freight/shipping costs, and also makes the product easy to store and transport to the job site.

Foam Comparison

  Competitive Products Osmose OsmoSet
Ease on/off lid  
Conveniently packaged*  
Expansion ratio 15:1 18:1
Efficiently packaged (for reduced freight, storage, & handling)  
Free shipping (pallet quantities)  
Compressive Strength (4lbs/ft3) 75 psi 76 psi
Tensile Strength 64-100 psi 130 psi
Reduced hydrocarbon footprint  



Product Kit Foam Yield* Weight Per Kit Kits/Pallet Part Number
OS-2.5 2.5 ft3 11 lbs 100 70-070-300-010
OS-5.0 5.0 ft3 25 lbs 64 70-070-300-020
OS 6.0 6.0 ft3 30 lbs 64 70-070-300-040
OS-7.5 7.5 ft3 35 lbs 64 70-070-300-050
OS-10.0 10.0 ft3 45 lbs 48 70-070-300-060
OS-12.5 12.5 ft3 55 lbs 48 70-070-300-070

*At density of 4.0 lbs/ft3.  Foam yield was established at 72º.  Cold weather may not yield expansion to specifications.

Each kit includes Part A & Part B mixtures, a high-speed mixer, and a mixing pail. And for transformer pads ask about OsmoSet Pad Leveling Foam – a pressurized closed-cell self-curing foam that delivers the strength and support needed to safely repair utility foundations.


For more information on OsmoSet pole setting foam, please call 770.632.6700 (option 3) or email