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DayCreek Journal

July 27 , 2009

Concrete Countertops - Parts 5 & 6

Now that the concrete countertop has been removed from the mold, the countertop is moved outside to grind down the top surface of the countertop. This is done using a special grinder/polisher that has a water attachment. It's a really wet, messy job so it's best to do this outside or in an area that can get wet with a drain.

Diamond grinding/polishing pads are used to remove the top layer of concrete, exposing the recycled glass aggregate underneath. This is a bit of a grind, but after 20 minutes or so, the top layer is mostly removed.

Once the top layer is ground down, a cement paste is applied to the top to fill bug holes (air holes) in the concrete surface.

After the paste has had a chance to set, the countertop is ground down a second time and then polished with finer grit pads to leave a dull, but refined finish that is now ready to be installed and sealed.

If you were to build a countertop in which the aggregate did not need to be exposed, most of these steps can be eliminated.

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