How to stucco over block

Tom Silva replies: Cement block provides a goo solid base for stucco , but if you try to apply it directly to the walls, the paint will interfere with the bond. This video shows the steps required to complete this stucco project over a concrete foundation. These steps will apply to most brick or cinder block structures as well. Regular stucco is doomed to fail.

You could use a pond liner. A waterproof fabric designed for such a purpose. OR jst texture over it to make it a different design or smoother.

If you are not certain that it will be installed correctly then you may want to re-think! How to stucco a cinder block wall Skim coating CMU walls. To apply stucco to an existing brick, block , or concrete wall, first brush a concrete bonding agent onto the wall, then allow it to dry completely. After the bonding agent has been allowed to dry, the stucco can be applied directly to the wall.

Stucco a Masonry or Concrete Wall. Applying stucco over the exterior of a brick home is possible. Knowing how to stucco involved following certain steps to ensure a proper job.

There is a variety of stucco textures that can be created. Traditional stucco is simply a variety of concrete, applied in several layers to create a strong bond to the wall. This article covers exterior stucco applications over a wooden or steel framework, or over a solid wall. If you are unable to think of the right way of finishing a cinder block wall, stucco application, followed by textured effect is the best option to consider. That is not a good place for a synthetic stucco , it does not have the impact resistance required for a high duty application inside a restaurant.

Chipping up the wall is a variation of an old method that seems to work the best for us. To limit on the telegraphing of the morter joints and for insulation purposes. If you are going over the block with a cementis topping it will need to be paint free and powerwashed with an application of bonding agent before the coating. Make Your Mix A Little Rich: The basic stucco recipe is parts sand to part Portland cement but for block walls, a little bit richer mix will help the mud to stick better.

A rich mix is simply adding a little more Portland cement in the recipe. Work your stucco over the big cracks and gaps first filling them in before you start applying the stucco to the whole wall. If you just start applying it and ignoring the large gaps or cracks you are going to have an issue when you trowel over them. The stucco will not stick well.

So I recommend hitting those first. I always thought tradition stucco was applied over wire mesh hard coat and that is how my subs have installed in the past. Today I saw a job in which the stucco was applied to cement board that was secured to the house sheathing.

I was wondering if anyone is familiar with this technique or has had. Many of the stucco cracks on block wall reflect the cracks or weaknesses in the block wall. The block expands and contracts as discussed above.

As the concrete block is installed the mortar joints can shrink causing cracking along the mortar joints. Windows and doors in a wall are weak places in the wall. Quantity includes typical waste overage, material for repair and local delivery.

Some contractors will use paper or house wrap behind the stucco , but it’s not necessary. For traditional stucco , a mechanical attachment is required (metal lath screwed to the wall through the plastic webs, or similar attachment). Because concrete block is considered by most homebuyers in Florida to be the sturdiest type of construction, many of them assume that a stucco finish on the wall means concrete block , and it can be a disappointment on the occasions when we have to tell a homebuyer that it is not what they are getting. Adding stucco over a concrete block wall is one of the most compatible home projects. It is a simple matter to get the concrete and stucco to bond.

However, this bond becomes stronger when a steel mesh is hung onto the wall to create a textured surface to which the stucco can easily adhere. Mock or synthetic stucco is lighter, and often uses a foam insulation base. When stucco is used over wooden surfaces, there are more logistical difficulties compared to when it is applied onto a block house which is an easier process, since block is relatively more stable than wood. A cinder block chimney is not exactly attractive. Recoating old stucco , painted and unpainted.

I got smooth finish stucco added on my textured stucco house yrs ago. It has started to turn white in areas and crumble off the block wall first and now parts of the house. Wire stucco lath is placed over the foam insulating board and attached to the masonry below using concrete nails. Installing stucco over brick would be the easier part of the work. The brick may need to be pressure washed and then have a coat of bonding agent sprayed on to prevent the new stucco from chipping off.

I have to attach a couple of casing legs to a wall that has an inch of cement stucco over con block.