Sanding walls of any type requires a machine that is both powerful and fast.
Sanding down concrete wall.
After you have prepared the area it s time to choose your sandpaper.
Make sure the patched area is dry before attempting the grinding process.
The angle grinder is loud and it will produce a lot of dust.
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.
Give the wall about 15 minutes of dwell time then test the texture with a fingertip.
Remove the soap residue by rinsing the walls with a sponge and.
If dealing with a large space it is crucial to work in sections particularly when sanding by.
The grinder will only work on fully.
If concrete is applied to a wall incorrectly the first time it can feel rough or uneven.
Press the grinder.
Using the coarsest grade.
Put on all safety gear.
Spritz the old concrete with a little water to make it damp before applying the cement paint.
Powerful to easily get rid of the old rough paint and fast so you can achieve a high quality smooth finish.
How to sand concrete walls step 1.
Fill any holes or dents with a good patching slurry.
Cleaning and leveling along the way.
Instructions thoroughly wipe down the surface to ensure there are no debris that could leave pits.
Wash the walls with dishwashing soap and 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.
When the texture is soft enough for you to rub it off all the way down to the drywall beneath it s time to.
To prevent the inhalation.
4 thoroughly sand the concrete.
The sandpaper you choose depends on the quality and intensity of sanding you want to do.
As in any diy project the key to an excellent final product lies in proper preparation and having.
Normally you d start by using a coarse grit sandpaper that is in the range of 40 60 grit.
How to sand down patching cement from foundation walls step 1.