You can make it smooth by using the second finest sandpaper you have putting your sander on the highest speed setting and then beginning from one corner of your concrete surface and finishing on the other.
Sanding concrete walls smooth.
Grind the patch down until it sits on the same level with the rest of the foundation wall and until it is smooth to the touch.
It has a rotating disc of 6 to 8 inches on the end of the grinder housing.
You ll place sanding discs beneath the buffing pad one at a time.
Also like sanding a concrete floor it is best to start with an area in a corner or near a wall.
How to smooth a concrete wall finish.
1 2 part water.
Sanding the wall can often take care of the problem but it is difficult to sand a very large surface smooth and you might end up with places that are recessed while others are higher making the wall look worse than before.
Once you have everything prepared you will need to mix the mortar.
Once you mix together these four ingredients use the back of the shovel to smooth the surface of the mixture.
Remove uneven patched areas of concrete by sanding it with an angle grinder.
5 smooth the concrete.
Can concrete be sanded.
There are also three different types of sanded finish you can achieve depending upon the tools and amount of removed material.
The good news is that concrete can be sanded with relative ease when the proper equipment is used such as a good concrete sandpaper made using diamond instead of sand.
If concrete is applied to a wall incorrectly the first time it can feel rough or uneven.
If you re inside set up plastic sheeting to protect walls or cabinetry from dust generated by the sander.
Make a groove in that smooth part with the shovel.
Sweep or vacuum the floor to remove loose debris.
The process of mixing mortar is relatively easy and straightforward as long as you have the right recipe.
You might think man made stone would be impossible to sand.
Mixing your own concrete may take a few adjustments.
Cinderblock and concrete aren t considered attractive by everyone s standards especially if the block or concrete wall has recently patched cracks or holes.
The right angle grinder is used as a hand held device.
The grinder is fitted with sanding papers ranging from 60 grit which is used to even out concrete floor corners and countertops to 120 grit which is used to smooth the concrete into a polished finish.
You may have to grind some of the surrounding area of the original wall to even out the wall.