Sanding walls of any type requires a machine that is both powerful and fast.
Sanding down concrete wall.
How to sand concrete walls step 1.
Powerful to easily get rid of the old rough paint and fast so you can achieve a high quality smooth finish.
4 thoroughly sand the concrete.
The grinder will only work on fully.
If dealing with a large space it is crucial to work in sections particularly when sanding by.
It s important to immediately cover the wet cement paint with the stucco mix.
A diamond pad is the only type strong enough to cut through.
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.
Attach a diamond sanding pad to a hand held grinder.
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.
Wash the walls with dishwashing soap and water.
Remove the soap residue by rinsing the walls with a sponge and.
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.
The sandpaper you choose depends on the quality and intensity of sanding you want to do.
Instructions thoroughly wipe down the surface to ensure there are no debris that could leave pits.
Spritz the old concrete with a little water to make it damp before applying the cement paint.
Using the coarsest grade.
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.
To prevent the inhalation.
Press the grinder.
After you have prepared the area it s time to choose your sandpaper.
Cleaning and leveling along the way.
When the texture is soft enough for you to rub it off all the way down to the drywall beneath it s time to.
Give the wall about 15 minutes of dwell time then test the texture with a fingertip.