Sanding Concrete Close To A Wall

Roll liquid concrete bonding agent over the surface of the wall in fairly straight lines using a short napped.

Sanding concrete close to a wall.

After sanding you should apply 2 3 coats of acid wash on the entire surface to hide sandpaper scratch marks from the concrete. Trowel a 3 8 inch. 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. Once your mortar is made begin spreading it over a small area.

Attach a diamond sanding pad to a hand held grinder. Sand any particularly bad areas of concrete with rough grit sandpaper. Wash the walls with dishwashing soap and water. Normally you d start by using a coarse grit sandpaper that is in the range of 40 60 grit.

4 thoroughly sand the concrete. After you have prepared the area it s time to choose your sandpaper. Press the grinder. How to sand concrete walls step 1.

A diamond pad is the only type strong enough to cut through. 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. Usually the patched areas are visibly noticeable even if the area gets painted. Once you have everything prepared you will need to mix the mortar.

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 step 1. Do not try to make the wall level. The process of mixing mortar is relatively easy and straightforward as long as you have the right recipe.