Specially treated super-fine sand that has been washed, filtered for even particles and heat dried to reduce the weight so it does not sink and spreads evenly over the surface of caulk used to replace expansion joints or to repair cracks in concrete. The sand creates a more natural appearance on the surface of the caulk, prevents tracking and prevents debris from becoming embedded in the caulk. It must be applied over fresh caulk while it is still sticky at the surface. This sand provides a professional finished look and protects the caulk.
The following videos show the Finishing Sand application process.
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They work great and are simple to use.