How To Fill Concrete Walls To Make Them Look Smooth

Let the joint compound dry and then sand away any ridges made by the trowel.

How to fill concrete walls to make them look smooth.

Purchase enough concrete to fill the hole then add it all to a big mixer with a pouring ramp. Use a screed to smooth out the concrete immediately before it has a chance to set. It refers to spreading a layer of joint compound over the walls to fill in the bumps and valleys in the texture effectively creating a smooth surface. Start at the bottom corner of one wall and in a single smooth motion smear the mortar upward 2.

Allow the concrete to dry for approximately 30 minutes until most of the moisture is gone from the top. Trowel a 3 8 inch layer of concrete over the wall with a straight trowel. Let it dry and then sand it smooth. You may be able to rent a concrete mixer.

Hold the trowel almost flat and swing it in large overlapping arcs while applying pressure. Use a sanding pole if you cannot reach the upper portions of the wall. Float the concrete when you re done grooving and edging photo 6. Wet the pointing trowel and hold it upside down as you scoop the mortar loading up its lower side.

Floating removes the marks left by edging and brings the surface one step closer to a final finish. Apply another coat of compound to the wall in the same fashion as the first one if the wall is still slightly rough. Drag the flat of the trowel straight across the surface of the concrete to smooth it.