What is the main characteristic of cementitious siding that makes it a concern for builders?

Cementitious siding is primarily composed of a mixture of cement and other materials, which gives it durability and resistance to various external conditions. However, a significant characteristic that raises concerns for builders is its tendency to crack under certain circumstances.

This cracking issue can arise from several factors, including expansion and contraction due to temperature fluctuations, improper installation, or impacts. While cementitious siding is designed to be tough and long-lasting, its brittleness can lead to cracking over time, particularly if not installed correctly or if the building experiences significant movement. Builders must consider these potential cracking issues during both the selection and installation processes to ensure the longevity and aesthetic appeal of the siding.

Other characteristics of cementitious siding, such as its sensitivity to water damage or weight considerations, are relevant but do not stand out as prominently as the issue of cracking. Similarly, while limited installation options may exist due to the material’s weight and handling requirements, they are not as critical as the risk of cracking, which can lead to both functional and visual problems for the siding over time.