Silt Fence Installation

My company began construction last week and we are having some difficulty with our silt fence. It keeps falling down, and I am not sure why. The area around the fence is rocky, so we think it may have to do with that. Can you help?

Thanks for contacting Granite Environmental. We're happy to help! Silt Fence has some limitations and should not be installed along areas where rocks or other hard surfaces will prevent uniform anchoring of fence posts and entrenching of the fence fabric. This will greatly reduce the effectiveness of silt fencing and can create runoff channels leading off site and costly fines.

Silt Fences should be inspected frequently, as well as after each rainfall event, to ensure that they are intact. If gaps or tears are found, they should be repaired or the fabric should be replaced immediately. Accumulated sediments should be removed from the fence base when the sediment reaches one-third to one-half the height of the fence to avoid failure. Sediment removal should occur more frequently if accumulated sediment is creating noticeable strain on the fabric. When the silt fence is removed, the accumulated sediment also should be removed.

If a standard strength geotextile is used, it can be reinforced with wire mesh behind the filter fabric. This can increase the effective life of the fence. The maximum life expectancy for synthetic fabric silt fences is approximately 6 months, depending on the local conditions.

If this does not help you, feel free to give us a call. We'd be happy to discuss your project and possible solutions.

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If you have any additional questions, please contact our Granite Environmental sales team at +1 (772) 646-0597 or TOLL FREE at: (+1) 888-703-9889

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