How to Mix Stucco How to Mix Stucco

What You'll Need
Stucco mix
Water
Fine sand
Mixer or hand mixing tools
5-gallon bucket or wheel barrow

Because of the widespread use of stucco as an exterior house coating, especially in hotter climates such as in California, New Mexico, and Arizona, commercial home builders have had to learn the art of mixing stucco. Although the composition of stucco is not much different from that of more commonly used plasters and mortars used for centuries to decorate both interior and exterior walls, there are few handymen today who know or use this art. But because it is easy to apply and is versatile enough to cover concrete, cinder block, brick, or adobe surfaces, you will find stucco to be a desirable material to use in covering either interior or exterior walls. But, to use this wall covering, you will first need to know the art of mixing it. You'll find 5 simple steps below, which you can use to mix stucco.

Step 1 – Collecting Needed Materials

Because stucco is such a fast curing covering, (usually about one hour) you will need to mix and apply it with as little delay as possible. This means you'll need to gather all needed materials and tools before you begin the actual mixing process. Measure your ingredients carefully. Otherwise, you may finish your project only to find that you have run out of mixture you need, or that you have an excess amount that you will be unable to use.

Step 2 – Wet All Tools and Materials

Because lime is one of the main ingredients in stucco, and because lime quickly absorbs moisture and easily sticks to hard surfaces such as you metal and plastic, you will need to wet all your tools and materials such as containers, trowels, and mixing tools before any of them touch your stucco mixture. Everything that touches the mixed stucco without have first made wet will likely have dried stucco stuck to it.

Step 3 –Adding Sand to Your Stucco Mix

If you're planning on applying your stucco to a larger area, say an exterior house wall, you will want to use a commercial mixer for faster mixing of larger mixture amounts. A bucket or wheelbarrow will work if your coverage area is smaller. But whether you mix in a commercial mixer or bucket, add 2 to 3 parts construction sand for every part of stucco mix. A good way to keep track of these proportions as you add individual components is to use a shovel. For each shovel full of stucco mix, add 2 to 3 shovels full of sand, depending on the amount of grit you want in the final product.

Step 4 – Adding Water to your Stucco Mix

You will find it difficult to measure the amount of water to add to your dry mix. The best way to determine water amounts is by judging the consistency of your wet mix and the consistency in its color. If your dry stucco mix is a gold color, for example, your final mixture should be the same gold color throughout the mixture. Its viscosity—or thickness—should be similar to that of thick paste.

Got a New Project You're Proud of?

Post it on Your Projects!