Sanding Concrete Close To A Wall

How to sand concrete walls step 1.

Sanding concrete close to a wall.

Normally you d start by using a coarse grit sandpaper that is in the range of 40 60 grit. The process of mixing mortar is relatively easy and straightforward as long as you have the right recipe. Trowel a 3 8 inch. Also like sanding a concrete floor it is best to start with an area in a corner or near a wall.

Usually the patched areas are visibly noticeable even if the area gets painted. Remove uneven patched areas of concrete by sanding it with an angle grinder. How to smooth a concrete wall finish step 1. The sandpaper you choose depends on the quality and intensity of sanding you want to do.

Attach a diamond sanding pad to a hand held grinder. Once your mortar is made begin spreading it over a small area. Do not try to make the wall level. Press the grinder.

Patches of cement are often uneven and stand out from the rest of foundational walls especially if cracks in the original walls necessitated the repair. Sanding concrete using an orbital sander if you have concrete that is going to be exposed architecturally you can sand it by hand using wet and dry sandpaper or an orbital sander. Wash the walls with dishwashing soap and water. A diamond pad is the only type strong enough to cut through.

4 thoroughly sand the concrete. Sand any particularly bad areas of concrete with rough grit sandpaper. After you have prepared the area it s time to choose your sandpaper. After sanding you should apply 2 3 coats of acid wash on the entire surface to hide sandpaper scratch marks from the concrete.