How To Stucco Concrete Block Walls

Add the stucco to the top of the wall then spread it from left to right repeating this as needed to finish the layer.

How to stucco concrete block walls.

Stucco is basically a custom mixed or a factory prepared cement plaster. While the stucco is drying mist the surface periodically to keep it moist during the hardening period. The magic trick most don t know about is a bonding layer of cement paint. I wouldn t go as far as a 2 to 1 ratio just a little more to make it adhere better.

This first coat is known as the scratch coat this coat helps the final coat bond properly to the wall. Use the flat finishing trowel to spread the stucco evenly across the surface. Allow the scratch coat to harden slightly. After the bonding agent has been allowed to dry the stucco can be applied directly to the wall.

A rich mix is simply adding a little more portland cement in the recipe. The first coat application is important to be done carefully as it forms the base of this finish. Work your stucco over the big cracks and gaps first filling them in before you start applying the stucco to the whole wall. First coat is my filler or skim coat and the second coat is my finished coat.

With the coats you get a durable and lasting finish which is also an attractive and cost effective solution. Mix it to the consistency of regular paint. Otherwise try picking up the stucco mix with a flat tool like a hawk and then transferring it to the wall with a trowel. Cement paint was used by masons of old to help new stucco material bond to old stucco concrete or concrete block.

To apply stucco to your existing brick block or concrete wall first brush a concrete bonding agent onto the wall then allow it to dry completely. Apply the first coat of stucco to the concrete surface. The basic stucco recipe is 3 parts sand to 1 part portland cement but for block walls a little bit richer mix will help the mud to stick better. The scratch coat should be between 1 4 and 1 2 inch thick.

If you have a concrete sprayer use it to cover large areas quickly. Typically i like to apply 2 coats of stucco on the walls i am covering. To stucco a cinder block wall apply a concrete bonding agent apply scratch layer of stucco and then add a finishing coat of stucco allowing 36 to 48 hours for curing between each layer.