Spray Foam Acts as a Critical Component in Net-Zero Home Construction

While it may seem like something unimaginable, some homes being built are capable of generating more electricity than they consume. Builders of net-zero homes, as they're known, employ a variety of techniques to achieve their energy independence, including the use of spray foam during construction.

Meritage Homes, a U.S.-based homebuilder, recently unveiled its first net-zero home community in Arizona. According to the company, engineers crafted the houses to adhere to strict environmental codes. Among other features, they were built with solar panel systems and energy efficient appliances. Spray foam was also used to shore up the cracks and leaks in the foundation, as well as around doors and windows.

According to Meritage executives, air-tight spray foam was a critical part of the construction and contributed to the building's net-zero designation. "Meritage Homes has been building energy efficient homes for the past 25 years, but we raised the bar in delivering the next phase of what we're calling a residential revolution," company chairman Steve Hilton said in a statement.

Net-zero houses are becoming increasingly popular in the U.S. as homebuyers become aware of the cost savings that can result from the slashed utility bills. Many net-zero homeowners' generate more electricity than they need, selling the excess back to utilities for a profit.