Why are there lossened particles from the EnviroSTONE on the surface of my flagstones?
It must first be recognized that most flagstones have uneven surfaces and the EnviroSTONE depth will only remain as deep as the lowest part of the flagstone surface. As well, the impact caused by regular foot traffic and heavy rainfall may loosen the uppermost aggregate particles from the EnviroSTONE. Do not be alarmed if this happens as only a small amount becomes detached from the joint, and the majority will remain stabilized in place. If regular sweeping of your flagstone surface becomes necessary, it may be time to replace the old EnviroSTONE with new EnviroSTONE.