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Efflorescence Removal

Efflorescence, as mentioned in the technical article, is acid-sensitive. Lime, salts and mineral deposits will usually dissolve when in contact with acidic liquids. Since efflorescence is sensitive to acid, StoneTech® Professional Restore ™ Acidic Cleaner works well in dissolving and removing the substance in most instances.  Follow the application instructions below:

Follow all label instructions as well as the instructions detailed below. Test in an inconspicuous area to determine if the desired results are achieved. 

For efflorescence removal on non acid-sensitive surfaces such as most granite, slate, clay pavers, clay brick, sandstone, etc.:

1) Mask off and protect any surrounding areas that will not be treated.
2) Apply mixed solution at the light duty dilution level as listed on the product label, mix stronger if needed.
3) Apply to the surface using clean mop, towel, sponge, or sprayer.
4) Agitate with a stiff white nylon scrub brush, white nylon pad, or appropriate floor machine.
5) Rinse area with a lightly dampened clean mop, sponge, towel or wet vacuum. Do not over apply rinse water.  Moisture is one of the key factors in the development of efflorescence.  Rinse well enough to remove any cleaner residues only. DO NOT OVERWET.
6) Allow the surface to completely dry to determine the desired results.
7) Sealing the surface using a StoneTech® Professional impregnating sealer will greatly minimize or eliminate efflorescence from recurring.
8) If there is a continuous moisture problem beneath the surface, the efflorescence will probably still occur.

Efflorescence removal on acid sensitive surfaces such as most marble, limestone, travertine, masonry brick, concrete and stucco, etc.:

Restore™ Acidic Cleaner is an acid based product which when applied to acid-sensitive surfaces will react with the surface and may alter its appearance.  If an acid-sensitive surface is already textured, this may not cause a problem that is noticeable. If this is the case, you may follow the efflorescence removal process detailed above. Otherwise, follow the application instructions below:

1) On flat surfaces you can sometimes remove the efflorescence using agitation by using a white nylon pad, dry.  Agitate using a hand applicator or rotary sander with the white nylon pad attached. Often the lime, salts and minerals will come off with just this process.
2) If this process does not completely remove the efflorescence, and on textured surfaces where the above step is not possible, additional treatment is required. Use StoneTech® Professional Polishing Powder for polished surfaces or StoneTech® Professional Honing Powder for unpolished surfaces.  These are strong/coarse abrasives so test before using to see the effect on the surface’s finish.
3) Mask off and protect any surrounding areas that will not be treated.
4) Apply the abrasive powder to the contaminated surface.
5) Add water until you achieve a milk-like consistency.
6) Agitate with a stiff white nylon scrub brush, white nylon pad, or appropriate floor machine.
7) Rinse area with a lightly dampened clean mop, sponge, towel or wet vacuum. Do not over apply rinse water.  Moisture is one of the key factors in the development of efflorescence.  Rinse well enough to remove any cleaner residues only. DO NOT OVERWET.
8) Allow the surface to dry completely to determine the effectiveness of the process. Repeat if necessary.
9) Sealing the surface using a StoneTech® Professional impregnating sealer will greatly minimize or eliminate efflorescence from recurring.
10) If there is a continuous moisture problem beneath the surface, the efflorescence will probably still occur.

If the situation persists, contact our Technical Service department at 1-888-STONEHELP (toll-free).

Note:
Above instructions are for reference purposes only. Please follow label directions on back of actual product.