We have a brick garage wall, the INSIDE is clay tile from the 1920's . The INSIDE is showing significant efflorescence and some spalling. Question 1: Should we apply GBS Penetrating Sealer to just one or BOTH (exterior brick , interior clay tile) sides of the wall? Question 2: Your instructions refer to the need to pressure wash surface prior to spraying. Is this necessary for a brick wall? Can we just brush it clean and apply the product? Thank you SAMPLE - Green Building Supply, Penetrating Concrete Sealer Concrete & Masonry Sealers

Question

We have a brick garage wall, the INSIDE is clay tile from the 1920's . The INSIDE is showing significant efflorescence and some spalling. Question 1: Should we apply GBS Penetrating Sealer to just one or BOTH (exterior brick , interior clay tile) sides of the wall? Question 2: Your instructions refer to the need to pressure wash surface prior to spraying. Is this necessary for a brick wall? Can we just brush it clean and apply the product? Thank you SAMPLE - Green Building Supply, Penetrating Concrete Sealer Concrete & Masonry Sealers

Status: Open Oct 01, 2020 - 12:44 PM

1answer

Answer

Oct 11, 2020 - 08:23 AM

Efflorescence results from excessive moisture and over time it builds up inside porous brick much like a stalagmite. At this point, it is very difficult, if not impossible, to prevent or control. If the GBS Sealer was used on the outside of the wall before the efflorescence started, then it would have prevented it as well as spawling. Sorry, but we have no solution for that part of your wall. You use it on other areas where efflorescence has not started as it provided excellent protection. The surface needs to be clean, dry, porous, neutral ph and free of sealers, paint, wax, oils etc.