Answer
May 19, 2019 - 08:10 AM
No, the best product would be our GBS Penetrating Sealer. It strengthens concrete and brick because it soaks deep inside it and chemically binds it all together in a matrix. It stops dusting, moisture, efflorescence and spalling. It carries a 15-year warranty against moisture penetration. It will not change the look or sheen of your brick. However, this product only works if applied correctly over a clean, dry substrate that has not been previously sealed or painted with anything whatsoever. If freshly applied with mortar, it needs to sit for a several weeks.You can test for suitability by applying some water on your brick and looking to see if water soaks in or not. If it sits on the surface for 10 minutes and will not soak in, then its either still too wet or it's been previously sealed. But if it soaks in quickly and turns dark, then our sealer will also soak in. The key in applying the GBS Penetrating Sealer is to saturate it. That means applying with a one-gallon pump sprayer several times, until the brick will no longer take any more product. Once it begins to run off the surface, it needs to be back-rolled so none dries on the surface.
