The solar energy industry has experienced remarkable growth over the past two decades. Photovoltaic capacity rose from just 1.4 gigawatts in the year 2000 to 512 gigawatts by 2018, with solar modules now supplying roughly 3 percent of global electricity. These systems generate clean power with no direct greenhouse gas emissions and low lifecycle emissions, […]
The U.S. Department of Energy Solar Decathlon stands as one of the most influential collegiate competitions in the field of sustainable architecture and renewable energy. When the 2013 edition opened on October 3 in Irvine, California, it marked a significant milestone in the program’s evolution. Nineteen teams from the United States, Canada, and Europe gathered
Noise intrusion is one of the most common complaints in residential buildings. Whether it is a teenager blasting heavy metal music, a snoring partner in the next room, or street traffic seeping through thin partitions, unwanted sound can disrupt sleep, reduce productivity, and diminish quality of life. Homeowners looking to build or renovate often ask
When building or renovating a home with a sloped ceiling, few decisions carry as much weight as selecting the right insulation strategy. Cathedral ceilings present unique challenges because the roof deck doubles as the ceiling assembly, leaving limited space for insulation and ventilation. Homeowners and builders considering mineral wool for this application must navigate building
Choosing the right air barrier for a residential wall assembly is one of those decisions that gets far less attention than insulation or windows, yet it has an outsized impact on energy performance, moisture control, and long-term durability. A homeowner recently faced a quote of nearly $30,000 to install a self-adhering membrane on a 2,880-square-foot
Understanding the Air-to-Water Heat Pump Advantage As energy costs climb and building performance standards grow stricter, homeowners and contractors alike are looking beyond conventional heating solutions. One technology steadily gaining attention is the air-to-water heat pump (AWHP), which extracts heat from outdoor air and transfers it to a hydronic distribution system. A detailed radiant heating
The lowest point of a building assembly presents one of the most significant challenges for moisture control. Concrete footings rest directly on soil and remain in constant contact with ground moisture throughout the life of the structure. Through capillary action, water molecules travel upward through the porous concrete matrix and into foundation walls, creating a
When framing a new home, few decisions have as much impact on long-term performance as choosing the right air barrier and weather-resistive barrier for the exterior walls. A builder recently faced this exact dilemma after switching from Zip System sheathing to CDX plywood mid-project, questioning whether a standard housewrap like Tyvek would deliver adequate air
Every durable building envelope relies on four essential control layers that separate indoor conditioned space from the outdoors. First articulated in a 2010 Building Science Corporation article by Joseph Lstiburek called “The Perfect Wall,” the concept has become a cornerstone of modern building science. In Lstiburek’s perfect wall, all four layers sit on the exterior
The construction industry thrives on shared knowledge, yet formal education opportunities for builders often lag behind the rapid pace of innovation in building science. That gap is exactly what the BS* and Beer movement set out to fill. What started as informal gatherings among building professionals in Portland, Maine has evolved into a nationwide phenomenon,
