How do I remove extraneous mortar left on a roof?
Hydrated mortar on a concrete tile surface can be difficult to remove. We are experimenting with a product called Acid Magic. It is an acid alternative that appears to be safe and effective. We have some sample bottles in our Lake Wales facility that your roofer might try. A 10% solution of muriatic acid is also an alternative. In some cases, the method of removing the mortar from the surface may compromise the factory sealer coat. If this happens, a coat of sealer, jobsite applied, would be required to block efflorescence from migrating to the tile surface.
