Affordable & Effective Silt Fence Installation Equipment
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The Posts

Posts are installed after the fabric is properly placed and compacted in the soil. EvTec found that compaction before posting significantly improved effectiveness. Posting independently allows the contractor to space posts as they are needed - where water concentrates posts are spaced closer together possibly at 3' apart, and on legs with concentration 8' apart.


Steel or wood? Doesn't matter to a tommy™ installation. Wood posts are allowed or specified in many parts of the country, but as regulations and suppliers are now preparing silt fence to actually pond water and hold sediment, steel posts are likely to continue gaining presence.


silt fence post installation


Problem with wood stakes

If not sized appropriately, (actual 2x2) smaller sizes break while installing them. Properly sized wood stakes will perform acceptably, but their physical size (40 inches) prohibit achieving proper depth to support the horizontal load. Generally, stakes must lie as deep in the ground as the potential load above ground.


Wood Stakes may be less expensive than steel, but if the fence won't hold up it doesn't matter.


Providing 18" of sediment and storm water is a major difference and benefit of proper installation by slicing with the tommy™. The fabric doesn't work out and inferior posts are no longer adequate (as in pre-fabricated silt fence).


Steel posts are often the best option. Steel posts can be driven the proper depth into very hard clay and even rocky soils. Steel posts can support the 18" horizontal sediment load (when properly placed)... and can be recycled - often wood posts are not recyclable.


Customer Comments

The durability, ease of operation, and ability to install large amounts of fence per day with a two-man crew, made the tommy™ a wise choice when considering our method for installation. We purchased a tommy™ May 2003 and have installed in some of the worst conditions Florida has to offer; the machine has hit everything from engine blocks to refrigerators with no damage to the machine. I attribute our growth over the past year to the tommy™ and plan to purchase another in the future.

Jobie Watson
Twin Oaks Environmental
Winter Park, FL