Which siding has had extensive problems with moisture and subsequent rotting of the underlying framing?

The choice of EIFS, or Exterior Insulation and Finish Systems, is correct because this type of siding has been documented to have significant issues related to moisture intrusion. EIFS, which consists of a layer of insulation board covered with a synthetic finish, can trap water behind the cladding material when not properly installed or maintained. This entrapment can lead to mold growth, rot, and deterioration of the underlying framing wood.

The design of EIFS, while energy efficient, has been criticized because it is not inherently water-resistant; it relies on drainage systems and careful installation techniques to be effective. If these systems fail or are inadequate, moisture can accumulate and cause severe damage.

Other siding materials, such as aluminum and steel, generally do not have the same level of moisture issues, as they are more resistant to water damage. Stucco can also suffer from moisture issues, but it typically does not trap moisture as significantly as EIFS does. Therefore, the distinct characteristics of EIFS make it particularly susceptible to moisture-related problems, which is why it is identified as the correct answer.