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Muriatic acid burns and discoloration on surfacing.

This is not an uncommon occurrance when muriatic acid is used to remove grout residue from light colored brick, block, grout, etc. It would not have happened if they had used Aldon "Grout Residue Remover".

First Step:

This is a strong discoloration of the materials, not just a stain. The only way to improve the appearance is with some degree of surface removal to reveal unburned material below.

With very light colored cream and white materials

Video:       See "Grout Residue Remover" at work!

See the next step to understand why the results at this point may not need to be perfect.


For surfaces that can be darkened a little bit, somewhat like when they are wet - test sealing the surfacing with one of our color enhancing sealers from Surface Types

This will provide:


It this is flooring, you can also finish with Aldon "Lifeguard" for additional gloss and wear protection.