A diamond pad is the only type strong enough to cut through.
Sanding down concrete wall.
Fill any holes or dents with a good patching slurry.
After you have prepared the area it s time to choose your sandpaper.
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.
If aiming for a specific type of finish measure and mark the necessary depth on the surface s edge 1 16 1 8 or 1 4.
Powerful to easily get rid of the old rough paint and fast so you can achieve a high quality smooth finish.
The sandpaper you choose depends on the quality and intensity of sanding you want to do.
How to sand concrete walls step 1.
The angle grinder is loud and it will produce a lot of dust.
Make sure the patched area is dry before attempting the grinding process.
When the texture is soft enough for you to rub it off all the way down to the drywall beneath it s time to.
Remove the soap residue by rinsing the walls with a sponge and.
Put on all safety gear.
Using the coarsest grade.
It s important to immediately cover the wet cement paint with the stucco mix.
To prevent the inhalation.
As in any diy project the key to an excellent final product lies in proper preparation and having.
How to sand down patching cement from foundation walls step 1.
The grinder will only work on fully.
Cleaning and leveling along the way.
Instructions thoroughly wipe down the surface to ensure there are no debris that could leave pits.
4 thoroughly sand the concrete.
Attach a diamond sanding pad to a hand held grinder.
If dealing with a large space it is crucial to work in sections particularly when sanding by.
Spritz the old concrete with a little water to make it damp before applying the cement paint.
Sanding walls of any type requires a machine that is both powerful and fast.
If concrete is applied to a wall incorrectly the first time it can feel rough or uneven.
Give the wall about 15 minutes of dwell time then test the texture with a fingertip.