Silt Fence

SIGMA silt fence is a high-tenacity woven polypropylene fabric for above-ground sediment control on construction sites. It maintains overland sheet flow while filtering out suspended soil particles, preventing downstream deposition. Built to meet AASHTO M288 "Temporary Silt Fence", this woven silt fence combines UV resistance, grab strength and hydraulic flow so it works reliably as an erosion control and sediment fence in supported (wire-backed) or unsupported configurations. Supplied in 24, 30 and 36 in heights on 100 ft and 300 ft rolls.

AASHTO M28824 / 30 / 36 inWoven PP · Black
Silt Fence

A silt fence built to AASHTO M288

SIGMA silt fence is an effective sediment control fence for above-ground use on construction sites. The woven polypropylene fabric maintains overland sheet flow and filters out suspended soil particles, preventing downstream deposition and acting as a defensive erosion control practice. Every roll is engineered to meet the AASHTO M288 "Temporary Silt Fence" requirements, balancing UV resistance, grab strength and hydraulic flow so the silt fence performs as designed in the field. As a geotextile silt fence it filters silt-laden runoff while the perimeter line still passes clean sheet flow.

How the woven fabric is made

The siltation fence fabric is woven from high-tenacity polypropylene tape yarns, then UV-stabilized with carbon black so it holds at least 70% of its strength after 500 hr of exposure. The tight weave sets a calibrated apparent opening size that lets water flow through while trapping suspended soil, giving the silt fence its filtration role. Because the same polymer family runs through our liners and fabrics, the silt cloth shares the abrasion, rot and chemical resistance buyers expect from a true geotextile rather than a light landscape mesh.

Supported vs unsupported silt fence

For ordinary perimeter sediment control an unsupported silt fence on posts at 4 ft spacing is enough; where flows are higher a supported, wire backed silt fence on 6 ft post spacing is specified. This reinforced silt fence — sometimes called a super silt fence — adds wire mesh behind the fabric for high-flow, heavy duty sites. Our standard production grade is a heavy duty silt fence with 200 × 200 lb grab tensile and 75 × 75 lb trapezoidal tear, comfortably meeting AASHTO M288 in both configurations. Choose 24, 30 or 36 in fabric height to suit the disturbed area and expected sediment load.

Installation and SWPPP use

A silt fence is trenched in along the down-slope contour so runoff ponds and drops its sediment before reaching waterways, which is why it is a core SWPPP and silt runoff control measure on graded sites. Posts are driven on the down-flow side at the rated spacing, the fabric is keyed into a small trench and backfilled, and the silt fence stakes hold the line under load. We supply it as plain silt fence fabric for crews who set their own posts, or as an assembled silt fence with stakes for faster installation.

Typical applications and projects

Contractors use SIGMA silt fence as a construction silt fence around stockpiles and disturbed soil, as an erosion control fence on slopes and along ditches and channels, and as a reinforced silt fence on highway, subdivision and utility jobs that must hold heavier flows. Where sediment has to be contained in the water rather than on land, pair it with our turbidity curtain; for the full land-and-water sediment kit see the wider erosion control range.

Sizes, rolls and supply

The black woven silt fence fabric ships on 100 ft and 300 ft rolls, as plain silt fence rolls or as assembled silt fence with stakes ready to install. As a silt fence manufacturer we supply construction silt fence, erosion control fence and reinforced silt fence to specification — tell us the height, roll length, wire-backing requirement and quantity and we will quote silt fence price per foot or per roll ex-works. Custom-printed silt fence and high-visibility colours are available on request for branded or DOT projects.

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Shipping & packaging

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Key features

  • Woven silt fence fabric meeting AASHTO M288 (supported & unsupported)
  • High grab tensile and trapezoidal tear strength for durable sediment control
  • UV-stabilized — 70% strength retained after 500 hr for outdoor service
  • Calibrated AOS and water flow rate filter silt while passing runoff
  • Available wire-backed (reinforced) for heavy-duty silt fence applications
  • Supplied as fabric rolls or assembled silt fence with stakes / posts

Ideal for

  • Construction site erosion control and sediment control fence
  • Perimeter sediment control around stockpiles and disturbed soil
  • SWPPP runoff and silt runoff control on slopes
  • Temporary silt fence along ditches, channels and waterways
  • Reinforced (wire-backed) silt fence for high-flow, heavy-duty sites
  • Highway, subdivision and utility-trench sediment control

Specifications

Silt fence geotextile — woven polypropylene to AASHTO M288 (Temporary Silt Fence). MARV except AOS (maximum). Values verbatim from the source datasheet.

PropertyTest MethodUnitAASHTO M288 — UnsupportedAASHTO M288 — SupportedSIGMA Standard Grade (MARV)
Grab Tensile Strength (MD × CD)ASTM D4632lbs100 × 100100 × 100200 × 200
Grab ElongationASTM D4632%< 50< 5015
CBR Puncture StrengthASTM D6241lbs700
Trapezoidal Tear Strength (MD × CD)ASTM D4533lbs75 × 75
PermittivityASTM D4491sec⁻¹0.05 (min.)0.05 (min.)0.05
Water Flow RateASTM D4491gal/min/ft²10 (min.)10 (min.)4
Apparent Opening Size (AOS)ASTM D4751mm / US Std. Sieve0.60 (max.)0.60 (max.)40 (0.425)
Ultraviolet Stability (500 hr)ASTM D4355% retained70 (min.)70 (min.)70
Max. Post Spacingft (m)4 (1.2)6 (1.8)6 (1.8) standard
  • Per AASHTO M288: grab strength requirements apply to geotextiles with elongation < 50% (most woven silt-fence fabrics). When geotextile elongation is ≥ 50%, the minimum grab strength reduces to 90 lbs.
  • Standard roll/assembly: fabric height 24 / 30 / 36 in (610 / 760 / 915 mm); roll length 100 ft / 300 ft (30 m / 100 m); assembled post spacing 6 ft (1.8 m) standard; material high-tenacity woven polypropylene, color black.

Frequently asked questions

Does your silt fence meet AASHTO M288?

Yes. Our standard production silt fence is a woven polypropylene fabric that meets AASHTO M288 "Temporary Silt Fence" for both supported and unsupported use, with 200 × 200 lb grab tensile, 75 × 75 lb trapezoidal tear and 70% UV strength retained after 500 hr per the designated ASTM methods.

What is the difference between supported and unsupported silt fence?

An unsupported silt fence relies on the fabric and posts alone, with a maximum 4 ft post spacing. A supported (wire backed) silt fence adds wire mesh or extra reinforcement, allowing 6 ft post spacing for higher flows and heavy-duty construction sites. Both can be supplied from our standard grade.

What heights and roll lengths are available?

Standard fabric heights are 24, 30 and 36 in (610 / 760 / 915 mm), supplied on 100 ft and 300 ft rolls (30 m / 100 m). We can provide plain fabric rolls or assembled silt fence with stakes.

How much does silt fence cost?

Silt fence price depends on fabric height, roll length, whether it is wire backed and order volume. As the manufacturer we quote ex-works per roll or per linear foot — send the height, length, backing requirement and destination and we will return a price the same business day.

Is the silt fence UV resistant for long projects?

Yes. The woven polypropylene is UV-stabilized and retains at least 70% of its strength after 500 hr of UV exposure (ASTM D4355), so it holds up through extended construction and erosion control schedules outdoors.

How is silt fence installed?

The silt fence is set along the down-slope contour: drive the posts on the down-flow side at the rated spacing (4 ft unsupported, 6 ft wire-backed), key the bottom of the fabric into a shallow trench and backfill so runoff cannot undercut it. We can supply plain fabric for crews who set their own posts, or assembled silt fence with stakes for faster installation.

What is the minimum order quantity?

We are a silt fence manufacturer selling by the roll, so minimums are low and flexible — typically a few rolls for a single project up to full-container volumes for distributors. Tell us the height, length and whether you need wire-backing or assembly with stakes and we will confirm the MOQ and price.

Can you ship silt fence by sea for export?

Yes. We export silt fence worldwide on 100 ft and 300 ft rolls, palletized or compressed for efficient container loading. We quote ex-works by default and can arrange FOB or CIF to your port — send the destination and quantity for sea-freight pricing.

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