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Soft Armor Hybrid Turf


A hybrid-turf instant armor mat for protecting severe slopes, channels, streambanks and shorelines. The hybrid-turf instant armor mat provides the immediate finished look of natural grass along with the high flow erosion protection of large rock riprap, while establishing permanently reinforced vegetative cover.

Added ballast to prevent uplift in turbulence

In culvert and pipe outfalls and other areas subject to turbulent water flow, conventional mattings can be lifted off the soil surface between anchor points and allow erosion to commence. The ShearForce12’s ½-inch high specific gravity perforated rubber core will not float and adds nearly 2.5 lbs/sf of ballast to the mat to resist uplift. This additional ballast ensures that the mat performs as expected in the worst of conditions while still promoting vegetation when the sun is shining.

Color: Grass green

Panel Sizes:

  • 3ft x 4ft (12sf)

More Information

InstaTurf ShearForce12 Details

  • Available in 3ft x 4ft, 30 lb panels for easy handling.
  • Typical installed cost savings lower installed costs than other scour mats, large rock and concrete blocks.
  • Worry-free rock-like scour protection under turbulent water flow at shear stresses > 12lbs/sf, from day one of installation.
  • All-in-one scour protection mat, no additional TRM or sod underlay required.
  • Aesthetically pleasing natural grass-like appearance.
  • Smaller carbon footprint than hard armor systems.
  • Highly UV stable and weather-resistant.
  • Simple installation, just lay it over seeded area and anchor it with standard staples, stakes or pins.
  • Grows and reinforces natural vegetation for permanent stabilization and mower-friendly maintenance.
3ft x 4ft panel weighing 30lbs The mat shall consist of a UV stabilized, monolithic polyethylene simulated turf structure with approximate 7/16 inch by 5/8 inch rectangular apertures adhered to a ½ inch thick, weather resistant, rubber core with 1.5 inch diameter openings on 2.5 inch centers, backed with an engineered lightweight polyester geotextile. The geotextile must be dense enough to retain fine soil particles and seed, yet open enough to allow seedling emergence. The mat shall have an unvegetetated permissible shear stress rating, as determined by ASTM D6460 large-scale channel testing, of 12 lbs/sf or greater for immediate as well as long-term scour protection against turbulent, high shear stress water flow.

ShearForce12 is ideal erosion protection for areas where people may come in contact or in areas where aesthetics are important. See the preferred application types. Areas within your job site may include:

  • Outfalls
  • Shorelines

Contact Tim Lancaster to discuss your project and if ShearForce is the right solution for you.

The immediate erosion control performance of InstaTurf ShearForce™10  was quantified in ASTM D6460 Large-scale Unvegetated Channel testing at TRI Environmental’s Denver Downs research facility

  • Shear Stresses up to 12 lbs/sf
  • 2ft wide x 40ft long channel flume, Loam soil bed on 20% gradient
  • Unvegetated ShearForce Products DID NOT fail at highest achievable flow discharge
  • Average Cumulative Soil Loss – Approx. .1 — .2 Inches (ASTM failure point .5 inches)
  • 3 Separate test plots with (4) consecutive 30 min flow events per plot
  • Mats installed with 8-inch wire staples at 3.8/SY
  • Discharges up to approx 50 CFS
  • Velocity > 24 ft/sec

Average Cumulative Soil Loss – Approx .1-.2 Inches (ASTM failure point .5 inches)
Unvegetated ShearForce Products DID NOT fail at highest achievable flow discharge

Results from initial and subsequent rounds of ASTM D6460 unvegetated large-scale channel testing were very impressive. But don’t just take our word for it… download the results and see for yourself.

ASTM ShearForce12 D6460 Test Report

Request InstaTurf® ShearForce™ 12 Specifications

Immediate Armoring

>3x Erosion Protection

Simple Installation

Aesthetically Pleasing

50%+ Typical Cost Savings


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