It's a good idea to be aware of the needs of a porous surface before any coatings can be applied. 

                                                                                 Untreated                                                                                            Treated

Liquid or gas can pass through the tiny holes of a porous surface..  In order to prevent porous surfaces, such as brickwork, from being penetrated by water or damaged by frost, a silicone water-repellent layer can be applied.  This will preserve the substrate.   A silicon water-repellent layer will dry clear.

Please note, all photos and text are used for training and educational purposes only.  

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