Question regarding stained concrete . . .

[beedub]

I just bought an office building and am planning a remodel. The floor currently has an epoxy that's in pretty bad shape.

The plan was to either grind or sandblast the epoxy, stain the concrete, and seal.

My contractor is saying "his guy" says that if we grind or sandblast the floor, the stain won't work because we would grind or blast away the carbon in the concrete, which is apparently what the stain sticks to. Sounds like he might be right, but I'd like some more opinions!

I've searched the forum and the internet and can't really find a definitive answer.

Any help would be appreciated . . . . we stained our basement floor and I really like the look. Plus, it's about 3200 sf, so the cost is attractive!

Thanks in advance.

 

[LegacyIndustrial]

Tell them to use Acetone Dye.
We have our own version and a test kit to try it out before going great guns.

http://www.legacyindustrial.net/products/concrete-stain-and-dye/concrete-dye-sample-kit.html

http://www.legacyindustrial.net/products/concrete-stain-and-dye/concrete-dye.html

 

[Shiftless]

Since when was there any Carbon in concrete? Does beedub mean to say "cement"?

 

[LegacyIndustrial]

I am pretty sure they meant to say: Lime

 

[beedub]

Tell them to use Acetone Dye.
We have our own version and a test kit to try it out before going great guns.

http://www.legacyindustrial.net/products/concrete-stain-and-dye/concrete-dye-sample-kit.html

http://www.legacyindustrial.net/products/concrete-stain-and-dye/concrete-dye.html

Sweet . . . . thanks, Scotty.

Once we get it sand blasted, I'll try the test kit and see where we stand.

I've pretty much decided that even if we can't stain it, I'm going to go with the bare concrete and a good sealer to give it some shine.

 

[LegacyIndustrial]

Excellent plan.

 

[Radix2]

Tell them to use Acetone Dye.
We have our own version and a test kit to try it out before going great guns.

http://www.legacyindustrial.net/products/concrete-stain-and-dye/concrete-dye-sample-kit.html

http://www.legacyindustrial.net/products/concrete-stain-and-dye/concrete-dye.html

Would it be possible to use buffed HD40 over this dye as the final sealer ? Or must a film building sealer be used?

 

[LegacyIndustrial]

Yes, it has been done successfully before.


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[Armorpoxy]

Make sure that they know what they are doing and not 'shot blasting' vs 'sand blasting'. We see very little of the latter, and shot blasting when used with a clear or tinted thin mil coating will show 'lawnmower lines'.

Best to grind the floor to #40 or 80 and apply a tint and seal or clear only.

As for the carbon, we have never heard of this issue, and concrete prep if done properly shouldn't affect the ability to treat it with any concrete product.

Our Prep Crete Division preps and coats over 1,000,000 sq ft of correcte ea year in the NYC area, and if you want we can set up a call with one of Foreman as a courtesy.