Is an acid wash necessary?
Yes. When applying UCoat It to a cement surface, an acid wash is necessary to neutralize the alkalynity of the surface and lower pH levels for acceptance of the epoxy. We specifically recommend a wash using a mixture of 10% muriatic acid mixed with water and applied to the surface using a bucket and push broom. See UCoat Instructions for full details. Always rinse thoroghly with fresh water and never let the acid solution “dry” on the surface which can cause powdering. The acid wash should be performed within 48 hours, preferrably immediately before, coating.
