Finishing concrete countertops can be done many ways.
Can you sand concrete countertops with regular sandpaper.
For the concrete we started using one 60 lb bag of quikrete fiber reinforced and one 80 lb back of quikrete 5000 mixed which gives you a hair over one cubic foot of concrete.
I ll cover how to polish the surface to a matte finish or a high gloss finish.
Z grit disc comes in 6 different grits 60 80 120 220 320 and 400.
Then you need to fix a place to begin.
I sanded the concrete countertops using my rotary sander and regular sanding discs from home depot.
220 grit 300 grit and 400 grit or 420 grit discs are ideal.
I started with 60 grit and then moved to 100 grit then 150 grit and finally 220 grit.
Also like sanding a concrete floor it is best to start with an area in a corner or near a wall.
For the edges i used regular sandpaper and sanded those by hand.
After you have prepared the area it s time to choose your sandpaper.
An orbital sander is the correct equipment to use when sanding concrete.
Sand the concrete countertops.
We ve since located a local supply of concrete fibers and are now using just the quikrete 5000 with these fibers added.
Once you have everything prepared you will need to mix the mortar.
Once the countertop is set on the base cabinets finish it with a hand polisher to.
You will want to have several different grit sizes of orbital sanding discs on hand.
Concrete countertop solutions has a solution for you.
Use z grit discs to smooth and polish your countertops or to round any sharp jagged corners.
Just like sanding a concrete floor you should partition and work section by section.
You can use chalk string or tape to mark the area.
However sanding a concrete floor or countertop the once over can not only give it a more polished look it can also give it the appearance of much more expensive natural stone materials.
The sandpaper you choose depends on the quality and intensity of sanding you want to do.
When to sand a concrete surface.
Obviously you don t need to sand a sidewalk or your home s foundation.
Allow the concrete countertop to cure completely before you remove the forms and set the countertop in place.
Normally you d start by using a coarse grit sandpaper that is in the range of 40 60 grit.
4 thoroughly sand the concrete.