Erosion & Sediment Control
Silt Fence Installation
Silt fence is the most common perimeter sediment control on Florida construction sites, but it only works when it's installed correctly. LES installs woven geotextile silt fence entrenched along the contour of disturbed areas to intercept sheet-flow runoff and retain sediment on site before it reaches adjacent properties, storm drains, or receiving waters.
What’s Included
- Site evaluation and silt fence layout following site contours and drainage patterns
- Trenched and backfilled fabric installation — not simply surface-staked
- Proper stake spacing and fabric tension for wind and flow loading
- J-hooks and end returns to prevent concentrated flow bypass
- Woven fabric selection appropriate to drainage area and expected flow
- Tie-in to existing BMPs, structures, and adjacent property lines
Common Failure Points
- Fabric surface-staked instead of trenched and backfilled, leaving a gap for runoff to undercut the barrier
- Straight fence runs that channel and concentrate flow instead of following the contour
- Missing J-hooks or end returns, allowing flow to bypass around the fence ends
- Sediment left to build past one-third to one-half fence height before removal
LES Field Method
- 01Walk the perimeter and confirm layout against site contours and the SWPPP exhibit before staking
- 02Trench and backfill fabric rather than surface-stake it
- 03Space stakes for the soil and wind/flow load specific to that run
- 04Install J-hooks and end returns at termination points
- 05Photo-document the completed run for the inspection file
Technical Notes
Installation follows accepted BMP practice referenced in the Florida Stormwater, Erosion and Sedimentation Control Inspector's Manual: fabric is entrenched and backfilled (not simply driven into the ground), stakes are spaced per manufacturer and site-condition requirements, fence runs along the contour rather than straight lines that channel flow, and J-hooks or return sections are installed to prevent end-around bypass.
Installed. Maintained. Documented.
Every installation, repair, or maintenance visit is photo-documented in the field — so the work holds up under inspection, not just under a good-faith assumption.
- Before, during, and completed-work photos
- Field maintenance notes
- Post-rain observations
- Corrective action tracked through to close-out
- Documentation-ready reports for your compliance file
Related Services
Silt Fence Installation by Service Area
LES provides silt fence installation across Central Florida, including:
Related Field Logs
Frequently Asked Questions
How deep should silt fence be trenched?
Fabric should be entrenched and backfilled, not just driven into the surface. Trench depth depends on soil conditions and site-specific BMP design, but the goal is consistent: no gap under the fabric where runoff can undercut the barrier.
How often does silt fence need to be maintained?
Sediment should be removed once it reaches roughly one-third to one-half of the fence height, and fabric or stakes should be repaired immediately after any tear, undermining, or storm damage — typically verified during routine and post-rain-event inspections.
When is standard silt fence not enough?
On steep slopes, high-flow concentration points, or where a jurisdiction requires additional protection near sensitive receiving waters, standard silt fence may need to be upgraded to super silt fence or paired with additional sediment controls.
How much does silt fence installation cost in Central Florida?
Installed silt fence in Central Florida generally runs about $3 to $7 per linear foot. Where a specific site lands in that range depends on total footage, how accessible the run is for equipment, soil and trenching conditions, and whether end-of-project removal and disposal are included. Small isolated runs cost more per foot than long continuous ones. LES quotes per site after reviewing the plans rather than pricing off a perimeter number alone.
Why does silt fence fail on Florida construction sites?
The most common cause is fabric that was surface-staked instead of trenched and backfilled, which leaves a gap for runoff to undercut the barrier. Close behind are straight runs that concentrate flow instead of following the contour, missing J-hooks or end returns that let water bypass around the ends, and sediment allowed to build past roughly one-third to one-half of fence height before removal. Most silt fence failures are installation and maintenance failures, not material failures.
Should silt fence follow the property line or the contour?
The contour. Silt fence works by intercepting sheet flow and slowing it enough for sediment to drop out. A fence run in a straight line across a slope collects and concentrates water at the low point, which is where it blows out. Following the contour keeps flow spread and shallow along the whole run. Property lines matter for where you are permitted to install, not for how the fence should be laid out.
What are J-hooks and why does silt fence need them?
A J-hook is a return section turned back upslope at the end of a fence run. Without it, water reaching the end of the fence simply travels around it and carries sediment offsite, which defeats the run no matter how well the rest was installed. J-hooks and end returns are installed at termination points and wherever a run ends mid-slope.
Do you remove silt fence at the end of the project?
Yes. Removal and offsite disposal is a separate scope from installation. Accumulated sediment is removed from the upslope side first, then stakes and fabric are pulled, the trench line is backfilled and compacted, and the fabric and stakes are hauled off. Removal should happen only after the site is stabilized and removal is authorized, since pulling perimeter control early can undo the closeout.
Request a proposal for silt fence installation
Tell us about your site and timeline — we'll follow up with scope and next steps.
Need erosion control, silt fence, BMP maintenance, or post-rain inspection support? Call 407-502-6476 or request a BMP proposal from Local Environmental Services.