While sustainability is continuing its reign as a key purchase consideration for homebuyers, we’re seeing indications that “resiliency” is trending for 2022. Resilient construction is about intentionally building for both sustainability and strength perspectives. Essentially, a well-built resilient home is constructed to withstand adverse natural and manmade disasters. In fact, the Urban Land Institute defines resilience construction as "the ability to prepare and plan for, absorb, recover from, and more successfully adapt to adverse events."
While it’s daunting to prepare for every natural disaster Mother Nature throws at you, one way builders are planning resilient construction is by examining climate zone maps and considering best practices for resilient building for location. Climate zones are one way builders can predict the types of weather they’ll need their structures to resist.
Every three years, the International Code Council (ICC) updates several codes, including the International Energy Conservation Code (IECC). The IECC climate zone map was developed to provide a simplified, consistent approach to defining climate for implementation of various codes.
In 2003, with direction from the Building America teams, researchers at the Department of Energy’s National Renewable Energy Laboratory simplified the U.S. IECC map into eight climate zones. They are defined by the number of heating degree days, average temperatures and precipitation:
In the latest December 2020 release, about 10 percent of all U.S. counties shifted to a warmer climate zone. These counties represent some highly populated, metropolitan areas that are experiencing considerable construction activity.
Builders rely on climate zones to know what energy codes and standards to follow. However, as resiliency comes to mind, homes should strive to meet the challenges of the climate where they are built. To do this, it's a good idea to make sure you're using the newest climate zone map.
"Resiliency will always mean different things to different people because nature's threats are geographically specific," says Craig Miles, Director of OSB Sales & Marketing at LP Building Solutions. "Phoenix has high heat, whereas Texas has high heat and strong winds. Florida and the Carolinas have moisture-rich humidity and salt. The Plains and Midwest have storms and straight-line winds, while the North has below-freezing temperatures."
Using the climate zone map to determine building materials helps achieve a certain measure of confidence. "Building materials that are resilient may give you a more predictable series of outcomes as well as the ability to withstand weather and other external threats," says Miles.
For example, to guard against the hot, beating sun, LP® TechShield® Radiant Barrier may help your air conditioning be more effective and may also help lower your energy costs to a more predictable level, especially in climate zones 1–4. For climate zones that experience moist and humid conditions, LP Legacy® Premium Sub-Flooring guards against moisture threats––even hard rain before the roof goes up––while adding floor strength.
The climate zone map dictates many of the energy-efficiency measures buildings must use and are especially relevant to the building envelope.
For more about resilient construction no matter where you live, read “How to make your builds more weather-resistant.”
New to the LP® Structural Solutions portfolio, LP® NovaCore® Thermal Insulated Sheathing is a dual-layered wall panel design to protect structures against heat loss and gain. It combines resilient OSB sheathing with XPS foam to provide continuous insulation without the long-term R-value deterioration associated with other foam insulation products.Continue Reading
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