I would definitely test to see if there is any topical sealer applied. An old ratty sealer will look bad and there probably isn't much you can as far as cleaning it to make it look better. But stripping and replacing will make it look great. Of course then you have your choice of water based vs solvent based, none-low-Medium-high gloss, color enhancing vs none.  I like Aldon chemical's products because they cover all the food groups. They sell little test vials for $8 apiece. I always keep some on hand. 
B


________________________________________
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On May 3, 2017, at 12:08 AM, Mike Alston <realmikealston@gmail.com> wrote:


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On May 2, 2017, at 11:56 PM, Blain Haeg <blain@goldstandardfloorcare.com> wrote:

That would depend on the level of soiling, grease, and buildup. A natural pad or white pad will normally be very effective. Let the alkaline cleaner dwell for a few minutes, so it can break down the oil and grease that has penetrated into the slate. If you are using any type of hand tool or spinner/extractor, use low speed and/or low pressure, as slate will often shed some of the top layer.

It's possible that they have applied a topical sealer, which would make the process much easier.

Blain Haeg
Gold Standard Floor Care
512.257.3070 office
512.750.1242 cell
blain@goldstandardfloorcare.com
www.GoldStandardFloorCare.com

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On Tue, May 2, 2017 at 10:48 PM, Mike Alston <realmikealston@gmail.com> wrote:
Scrub with a natural pad or something more aggressive? 

Sent from my iPhone

On May 2, 2017, at 10:49 PM, Blain Haeg <blain@goldstandardfloorcare.com> wrote:

Although porous, slate is pretty much bulletproof. Alkaline cleaner, scrub, extract, dry, multiple coats of penetrating sealer. Done.


On May 2, 2017 9:33 PM, "Michael Alston" <realmikealston@gmail.com> wrote:
Good evening, a cheimcal company has contacted me about cleaing several of there slate countertops. I have never cleaned slate countertops and won't see them until Friday and will take pictures then. Can I get some guidance on how to clean slate, thanks. 

--
Michael Alston
President
Surface Care Pros

SurfaceCare Pros
 
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