Showing posts with label Finishing Concrete Countertops. Show all posts
Showing posts with label Finishing Concrete Countertops. Show all posts

Friday, June 4, 2010

Concrete Patio Table (Part 4. Finished)

Amongst many other projects, the concrete patio table is finished. The surface was polished up through 800 grit, sealed with an experimental colloidal silica topping, and then coated with the soy-epoxy. I don't know how the silica densifier and epoxy will play together. We will have to wait and see.
A shot of the bottom. Since nobody sees this I wanted some kind of texture when people put their hands underneath.
The concrete was cast right-side-up and the glass and embeds we seeded into the surface and troweled in.
I rubbed down the epoxy with fine steel wool before waxing. Stainless steel tapcons secured the concrete to the base.

Sunday, August 9, 2009

Finishing the White Desk

The white concrete desk was placed two weeks ago. Form were stripped after 4 or so days. Initial grouting was done at 4 days and moist cured. Initial grinding 50 and 100 grit was done at 7-days. A second thinner grout was applied with a rubber trowel. The countertop was moist cured for another 7-days until polishing. At 14 days after placing the top was polished through 1500 grit. So the full polishing scheme went 50, 100, 200, 400, 800, and 1500. I skipped 3000 grit since the sealer doesn't really stick to it. Four coats of sealer went on today. The sealer will cure for another day (it is really hot and humid in the garage right now) and will get waxed before installation.

Tuesday, April 21, 2009

Concrete Fireplace Surround Reveal

After two days of curing in the mold, under plastic, and under wet towels the forms were carefully removed. As expected there were a few places that had honeycombing and need some slurry. The larger proportions make the fireplace stand out better.
Some honeycombing under the braces used to hold the mold together.

The concrete after a batch of colored slurry. The slurry was made using the same proportions of cement and pigment held together with just enough latex.

It is a little splotchy as the slurry dries. Another coat or two of slurry will be required to completely fill in all of the bug holes and honeycombing. A light grind will smooth the surface back out.