Construction Defect- Meeting of Dissimilar Materials
A construction defect is defined as a building flaw or design mistake that reduces the value of the structure or causes a dangerous condition. The most dangerous construction defects have the possibility of complete structural failure, resulting in physical injury or damage to people or property. However, countless defects present no increased risk of injury or damage to other property, but still cause harm to the property owner in the form of loss of use, decrease in property value, and extra expenses incurred in attempts to correct the defects.
One of the most common construction defect issues results in moisture intrusion of some kind. Typically, when there is a defect in the building envelope that allows moisture to intrude the envelope, it is caused by an issue where dissimilar materials adjoin.
Dissimilar materials are different types of materials (that are typically installed by different crews) that adjoin one another to create a water tight system. All components must be compatible with each other and they must be installed per the manufactures’ recommendations and in the proper sequence to create a water tight system. Due to the fact that most construction defect issues are caused by issues with dissimilar materials, there must be a great deal of attention and coordination given to the design, planning and execution of these details to insure the proper system is created.