Tips on Painting Cement Walls

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Do not paint over an unprimed cement wall.

If you would like to enhance the appearance of a bare cement wall, you can accomplish your goal by applying the appropriate type of paint. Because cement walls are poorly-suited for paint adhesion, you will need to condition them prior to paint application, or you will end up with a finish that will eventually chip and peel. In addition, you should choose a particular type of paint, depending on whether the wall is located indoors or outdoors.

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Cleaning

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Primer and paint will not bond to dirty cement walls. Exterior walls should be cleaned using a pressure washer prior to application. Interior cement walls, like those found in basements, can be scrubbed with a mop.

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Protection

Primer and paint drips and splatters can permanently damage certain types of flooring. You should take the time to meticulously cover flooring and other surrounding surfaces with heavy-duty fabric dropcloths and a low-tack painter's tape.

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Interior Walls

Satin latex paint is appropriate for coating interior cement walls. Those who desire a glossier coating may decide to choose a paint with a semigloss sheen. Flat latex paints are not suitable for interior cement walls, because they are prone to staining and difficult to clean.

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Exterior Walls

Acrylic latex paint is appropriate for coating exterior cement walls, because it possesses enough elasticity to contract and expand in varying weather conditions and temperatures.

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Primer

Cement walls require a base coat of primer prior to painting. Paint will eventually shed from unprimed walls. Coat interior cement walls with a latex primer. Coat exterior cement walls with an acrylic latex primer.

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Safety

Safety equipment is generally not required when painting exterior cement walls. However, you should wear a respirator when painting walls within basements that provide poor ventilation. If you need to use a ladder to access higher portions of a cement wall, read the safety guide on the side of the ladder to minimize the risk of injury.

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