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Surface Restoration And Treatment Of Limestone, Marble, Concrete
Options To Prevent and Repair Acid Etching
To Repair: Existing Marks (Including From Acid Etching) On Finely Finished Limestone, Marble, And Concrete.
Click the picture to see how "Fine Stone Restoration" lets you repair these dense, smooth finishes.
You can use "S-B-S Sealer" aerosol cans to restore the shine and protect against future damage. You may be able to spot seal and feather out the edges to match the gloss level on untreated areas.
To Prevent Acid Etching
If the finish of the surfacing is absorbent enough to seal it with one of our solvent based penetating sealers to a glossy level, the stone will be rendered acid resistant to a very high degree. These sealers are not attacked by acids and therefore will protect the stone. See S-B-S Sealer as a good choice for this, and review the surfacing in Surface Types.
If you choose to use Aldon "Fine Stone Sealer", you will note on that sealers page that it will slow down, but not stop acid etching. However, there is another option. If you will accept a level of gloss as shown in the pictures below, you can create an acid resistant finish.
The key is in the use of Aldon "Lifeguard" to create the acid resistant film. "Lifeguard" needs to be applied to a very low or non-absorbent surface. Test to determine how "Lifeguard" flows out on the surface and if the surface needs to be sealed first. The pictures below show the appearance and acid resistance of this process.
* Hydrochloric acid is far more aggressive than the acids found in fruit juices, wine, and cleaners.