Coir Erosion Control Mats are typically considered some of the strongest biodegradable erosion mats available. Designed to last anywhere from 4-6 years, these erosion mats are a common choice for areas that require long-term support while vegetation takes root. Most mats are designed as an open weave netting that is equipped to handle seeding before or after installation. Coir matting has been used in any Coir is a coconut fiber with high tensile strength and a decomposition rate that makes it suitable for a temporary substrate stabilizer. Coir Fiber Baffles are porous barriers installed in sediment dams and silt basins.