This is a snippet from our Weatherization and Renewable Energy Course – Purchase the course for AIA & State Credit
Thermal and Moisture Protection
Most construction claims result from a failure of the building envelope or shell caused by poor design or construction. Often, damage is caused by contractors and laborers while maintaining or erecting residential and commercial structures. Unfortunately, the original building plans or original design may lack sufficient detail to prevent exterior shell failure.
Workers often fail to assemble structures in accordance with properly written plans. Too often, workers are uneducated about proper construction of building systems and the use of materials per the manufacturer’s recommendations and reasonable “best practices” for construction of homes and buildings in coastal, mountainous or areas with relatively high humidity. Thermal and moisture protection is the entire country’s problem!
Occasionally, construction workers inadvertently damage the building envelope while maintaining or working on items not directly related to the building exterior, causing it to be compromised and fail over the course of time. The time it takes for an “EXTERIOR SHELL” mistake to cause noticeable damage can take from only a few days to several years. At times, repairs may cost more than the building is worth!
Unfortunately, most workers and contractors of new homes rarely get to see, first hand, the mistakes they’ve made. It usually takes a period of time before the building shell failure becomes evident. Often, the failure happens after the original warranty has expired and the repairs are then the responsibility of the disgruntled home-owner who feels compelled to hire a different contractor!
Improper design, construction application and inadvertent damage can all compromise the exterior shell of a structure and result in immediate or delayed building envelope failure. Building shell failures often result in water being allowed to enter the structure in a manner that is contrary to the intended design. Water must be forced to the exterior of the envelope by weep holes or ventilation. Delayed failure is almost always more expensive to remedy!
Primary claims. Water, whether liquid or vapor, when allowed to enter the building shell can cause a host of problems. Warranty and insurance claims result from:
• Damage to exterior systems and structure
• Failure due to rot
• Damaged, unrelated components that are not part of the building envelope
In areas prone to damage by water and water vapor, programs are often available to provide weatherization and energy conservation services at no cost to households with relatively low median income. Primary funding for these programs is from the U.S. Department of Energy with other funds from the U.S. Department of Health & Human Services, utility companies and local entities like Community Action or Habitat for Humanity… Yes…there is program assistance for those who need it, but remember assistance still costs taxpayers. In the long run, everybody pays!
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