Silt Saver Silt Fence Outlet Two-stage technology for sediment retention and controlled water flow.

The Silt Saver Silt Fence Outlet (SFO) is a patented, prefabricated sediment control device (Patent #12,060,690) designed to be integrated into a perimeter silt fence barrier or used as a stand-alone filter dam to retain sediment and provide controlled stormwater release in concentrated flow areas. It prevents catastrophic silt fence failure by allowing trapped stormwater to exit in a controlled manner rather than building up pressure behind the fence.

The SFO prevents silt fence failure by providing a controlled dewatering outlet that releases stormwater through a high-flow green mesh Stage 2 filter (rated at over 1,100 gpm/ft2), relieving hydrostatic pressure that would otherwise cause the fence to collapse. Its attached front water seal and rear scour guard, combined with pine chip-filled compression tubes secured with compression stakes, also prevent undermining at the base of the device.

The 2 Stage design delivers dual-function sediment control: Stage 1 uses a non-woven filter fabric positioned closest to the ground for maximum sediment retention, while Stage 2 uses a high-visibility, high-flow green mesh to allow controlled stormwater release and filtration at rates exceeding 1,100 gpm/ft2. This two-stage approach ensures that both fine sediment capture and rapid stormwater throughput are addressed in a single, integrated system.

The SFO is preassembled and sold as a complete kit, making installation straightforward without the need for heavy machinery. The kit includes a 2 Stage vertical sheet prefabricated with hardwood/oak posts, compression tubes with compression stakes, an attached front water seal and rear scour guard, and bonding strips with screws for attaching the outlet to an existing perimeter silt fence.

Yes – in addition to functioning as a dewatering outlet within a perimeter sediment barrier, multiple SFOs can be connected together to create a durable and effective velocity control best management practice (BMP) system on slopes. This makes the SFO a versatile erosion and sediment control solution across a range of site conditions and drainage configurations.

The Silt Saver Silt Fence Outlet is specifically engineered to replace the bulky, labor-intensive hardware cloth and gravel approach, offering a lighter, prefabricated alternative that installs and removes quickly without heavy equipment. Its multicomponent, preassembled kit design ensures consistency of installation and quality control on every job site.

No – the SFO is engineered for durability and requires minimal maintenance once installed, making it a practical long-term sediment control solution for active construction sites. Its scour guard, compression tubes, and water seal components work together to resist undermining and structural degradation without frequent intervention.