If displaced onto nearby hard surface pathways, could present a fall hazard. Hard pan may form under heavily traveled areas. Manufacturer should be contacted for information on Critical Height of materials when tested according to ASTM F1292. Some unitary materials can be laid directly on hard surfaces such as asphalt or concrete. Others may require expert under-surface preparation and installation by the manufacturer or a local contractor.
Materials generally require no additional means of containment.
Once installed, the materials require minimal maintenance. Easy to clean. Consistent shock absorbency. Material not displaced by children during play activities. Generally low life cycle costs.