To remove stubborn dirt such as tire marks leaf stains and grease spots follow these general cleaning recommendations.
How to maintain concrete wall.
Keep the surface free of debris by sweeping it with a broom or leaf blower or rinsing with a garden hose.
Saturate the scrub brush in the soapy water and wash the cement walls thoroughly with the soap to remove dirt and dust from the concrete surface.
The cheapest and easiest material to use is 2 in 4 in 5 1 cm 10 2 cm boards cut from a softwood like pine.
Stack wood planks to create a frame for the wall.
How to clean an exterior concrete wall.
These wood barriers hold the concrete in place as it dries so you will need to create 2 of them.
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Stand on the stepladder to reach the highest points of the walls if necessary.
Keep the boards less than 8 ft 2 4 m long so they aren t too difficult to handle.
Whether the wall is part of a building or a part of the landscape design.
Sealing joints in the concrete to minimize water intrusion through the joints.
Once you have it in that position brace the wall into place by running 2 by 4s at a diagonal from the outside of the form face to the footing.