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Silt fences are very effective when installed correctly and used in proper locations. However, there are places where they don’t work as well. This includes property with a concentrated water flow, where runoff could pool or cause a flooding hazard. You’ll also want to use caution when installing in areas susceptible to landslides. Your contractor will follow state guidelines and know when an alternate solution is more effective.

The bottom strand should sit between 12 to 15 inches from the ground. If you have a problem with small critters, you can aim for 8 inches. Three-strand fences should be 16 to 19 inches apart, four-strand fences should be 10 to 12 inches apart, and five-strand fences should be 8 and 10 inches apart.

The lifespan of a picket fence largely depends on its material. Wooden picket fences typically last 10 to 15 years with regular maintenance, while vinyl and composite picket fences can last 20 to 30 years or more due to their resistance to weather, rot, and pests. Metal picket fences often exceed 30 years, especially when properly coated to prevent rust or corrosion.

The lifespan of a fence can range from 5 to 50 years, depending heavily on the material, local climate, and how well it is maintained. For example, a wooden fence might last 7 to 15 years, while a vinyl fence typically lasts 20 to 30 years. Metal, composite, and glass fences have some of the longest lifespans. Proper maintenance, such as regular cleaning, inspections, and staining or sealing for wood, is key to extending the life of any fence material. Vinyl and composite are durable options that don't require sealing.