Fill them in with some mortar and let it dry.
How to fix a concrete block and stucco retaining wall.
Leave about inch on the front side of the wall to leave room for the stucco pattern.
Remove as much debris as possible from the wall so the concrete bonds cleanly to it.
Allow the mortar to dry for about one hour.
Scrub the crumbling areas of the wall gently with a stiff bristled brush to knock away small loose pieces of cement.
Apply the new mortar to the front of the crack using the margin trowel until it is flush with the rest of the wall.
When this occurs the homeowner has two choices.
Mix a new batch of mortar at the normal consistency.
Fill the holes and cracks as deeply as you can then scrape the top over with a trowel so the concrete can patch the wall together evenly.
There are many cool retaining wall options and i like this one the best.
Fill in the cracks or holes with concrete.
Step 3 place two large cement blocks tightly against the wall underneath the area to be patched.
Retaining wall repair options whether a retaining wall is built of stone block concrete or wood it can begin to lean.
Spray away most debris with water from a garden hose.
Some will suggest using an additive in the stucco mix some will suggest chipping t.
Apply concrete to any gaps in the blocks or mortar using a shovel.
In cases like mine the walls had some pieces of block that were completely missing due to poor drainage.
How to apply stucco to a block wall.
A little stucco and a few natural rocks to cap it off and you ve got it.
How to stucco over masonry block walls if they have already been painted.
I couldn t pass up the opportunity to show this bare concrete retaining wall and an idea that would improve the look of the home exterior and not have it be the eyesore of the neighborhood.
Also try mixing 1 cup 240 ml of a mild dish soap into about 5 us gal 19 000 ml of hot water to scrub off tough stains with a concrete brush.
Either demolish the wall.
After you remove the stucco be sure that the blocks are secure and straight using mortar to refasten the blocks together is ideal.
After you have a suitable foundation i would recommend a base coat skim coat put on the blocks themselves that is anywhere from 1 4 to 3 8 in thickness.
Use a power washer for extra cleaning power.