The following stage is to identify the base coat to determine whether the stucco is conventional or synthetic. Stucco that is troweled on a wall that is made of masonry or concrete is known as the base coat.

While synthetic stucco may employ an fiberglass embedded base coat apllied over an eps syrofoam, traditional stucco normally contains a base coat comprised of cement and sand and is over 1/2" thick of cementitous material. Look for the stucco layer that is under the top finish coat to determine which is the base coat.

The next step is to identify the finish coat after finding the base coat. The final coating of stucco that is applied to the surface, giving it its texture and look, which is known as the finish coat.

In contrast to synthetic stucco, which may employ an acrylic finish coat, traditional stucco normally has a finish coat comprised of a combination of cement, sand, and water. Look for the exterior layer of stucco that gives the surface its texture and appearance to spot the final coat.

Another important factor in determining the type of stucco is the stucco's age. While synthetic stucco was created in the 1950s and gained popularity in the 1980s, conventional stucco has been used for hundreds of years.

Look for any signs of wear or damage to estimate the stucco's age. Age-related cracking or chipping may be seen in traditional stucco, whereas sun exposure may cause fading or discoloration in synthetic stucco.

If you're still unsure about the type of stucco you have, it's always best to consult a professional. A stucco contractor or inspector can help you identify the type of stucco and provide guidance on the best materials and techniques for your project.