What Kind Of Stucco Do I Have On My Home?

I get this question a lot and I believe most people are not sure. If you have stucco on your home and you are trying to figure out what exactly it is, well you came to the right place. I will do my best in this article to explain the different types of stucco you may have on your home.

There are 4 basic types of stucco.

  1. Synthetic Stucco – Also known as Dryvit ™ or EIFS (Exterior Insulation and Finish System). If you knock on this system it will sound hollow. The cement coat is only about an eight of an inch thick and the styrofoam is typically an inch and a half thick.
  2. Traditional Stucco – If you knock on this system it will feel just like concrete. It will hurt your hand.
  3. One Coat Stucco – Probably the hardest one to figure out as it is still pretty thick cement but you should be able to hear a slight hollow because of the foam, but will still hurt your hand when knocking on it.
  4. Stucco Board – Probably the easiest to identify. This is a pre-manufactured board you buy at the store. There are trim boards around the four foot by eight foot pre-manufactured boards. Typically, four foot by eight foot and five sixteenths of an inch thick.

Exterior Insulation and Finish System consists of:

  • A moisture barrier (both cloth and liquid moisture barriers are available)
  • EPS styrofoam (adhered or mechanically fastened)
  • Base coat with embedded fiberglass mesh
  • Top coat with aggregate (aggregate size determines the texture)

Traditional Stucco is

  • A moisture barrier (typically roofing felt)
  • Metal lathe
  • Scratch coat
  • Brown coat
  • Finish coat

One Coat Stucco is

  • A moisture barrier (typically roofing felt)
  • Styrofoam
  • Lathe
  • Brown coat
  • Finish coat

Stucco Board is

  • Four by eight pre-manufactured board (boards are installed directly to studs. There is no OSB installed typically)
  • Trim boards (the panel board seams are covered with the trim boards)

Now you should have enough knowledge to figure out what kind of stucco your house is clad with. Some types of stucco are much easier to determine, but for the most part it should not be to tell after reading all the information in this article. The one coat stucco is the hard one and it even makes determining the others harder. The EIFS is simple because it sounds hollow. The traditional is easy because it is hard like a rock. Stucco board is easy because it is four by eight panels trimmed out with wood boards, The one coat is in between hollow sounding and hard as a rock.

Stucco Homes

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