Tag: Energy Efficiency

Energy Efficiency Adds Value to Your Property

  Insulation Requires a High Performance Air and Moisture Barrier to be Effective In the past, buildings had drafts, allowing air and moisture vapor to flow relatively freely through the exterior walls, keeping the wall cavity moisture-free. Increasing levels of insulation kept buildings more comfortable, but insulation can create a dew point inside the wall […]

Why You Should Use Air and Moisture Barrier with Foam Sheathing

There are a number of reasons why you need an air and moisture barrier over foam sheathing. Airtight exterior wall systems are critical to maximizing energy efficiency and gaining LEED points. However, certain characteristics of foam sheathing conspire to compromise airtight construction. The solution? Use foam sheathing together with a high-performing, moisture-resistive air barrier. As building codes […]

Common Problems that Reduce the Effectiveness of Your House Wrap

High-quality house wrap is most often made of spun, high-density polyethylene fibers. It is a vapor-permeable material designed to simultaneously block the passage of liquid. Properly installed, it’s a WRB with the ability to resist moisture while allowing humidity to escape from exterior wall cavities, which is of particular importance in humid climates. However, unforeseen […]

Energy Efficiency Starts with Airtightness

Building for sustainability, safety, and comfort requires the combined effort of engineers, architects, sub-contractors, and builders who understand how to design and specify an energy-efficient building envelope. This begins with the design concept and carries through to pricing, design review, construction, and building envelope commissioning. The preferred method for significant reduction in energy use and […]

Airtightness and Window Design: Is the Solar Design Obsolete?

Engineers are now coming to the conclusion that air-tightness is more important than window design in the conception of an energy-saving house.   According to the website for the Air Barrier Association of America, airtightness is gauged by measuring the building envelope’s effectiveness. But what exactly does air-tightness mean? Its technical meaning, unlike some terms […]

Keeping Basements Dry: Why spray-on applications aren’t up for the job

Wet basements aren’t only bad for homeowners, they’re bad for business. From occupant discomfort and health risks due to mould and mildew to expensive material damage, foundation moisture has become one of the biggest headaches in homebuilding. When moisture makes an unwanted appearance in a foundation, people automatically look to their contractors to correct it […]

Net-Zero Energy Building and Building Envelope

The detrimental effects of carbon fuel consumption on the environment have stimulated development of a ‘net-zero’ energy measurement for public and private buildings. A ‘Net-Zero’ building is defined as one that creates as much energy as it consumes on an annually averaged basis. Currently, energy production is not incorporated into the construction of most commercial […]

Air Infiltration vs Insulation: Continuous Air Barrier System Deserves Attention

In a recent article for Green Builder Media, Chris Norris suggests that the energy-saving potential of continuous air barriers is often underrated. For some time, state energy codes focus more on conductive heat transfer through exterior walls than on air leakage. Now, building codes increasingly set air leakage standards as well. Air Infiltration vs Insulation […]

Energy Efficiency in Modern Buildings

As modern building materials advance, energy efficiency is inescapable. Near-zero energy buildings are becoming increasingly popular in Europe. However, this will not have a great effect on energy consumption as a whole until energy efficient building materials and practices are widespread. Iowa State University Professor Yu Wang states that energy efficiency is relatively inexpensive when […]

Benefits of Metal Roofs in Building Design

  For many years, the upfront cost of metal roofing was probably the single biggest objection from business owners and building managers when considering what material should top new construction. Within the last decade, however, focus has shifted to sustainability and the lowering of carbon footprints in all types of construction. The many benefits of […]

The Purpose and Characteristics of a High Performance Air Barrier

Building tenants are understandably concerned over the quality of the interior space that they occupy. The comfort and integrity of the building will be enhanced if a high performance air barrier is incorporated in the building envelope. A good air barrier provides a separation between the conditioned interior space of the building and the uncontrolled […]

The Importance of Designing Adaptive and Dynamic Building Envelopes

Professionals in the construction industry have seen the buzzwords “resilience” and “adaptation” in their work, especially when it comes to the importance of building envelopes. While some might see the words skeptically as a trend, Irene C. Pau at Consulting-Specifying Engineer goes to show that implementing adaptive and dynamic building envelope goes a long way […]

Net Zero Energy Building Envelope Design

Net zero energy building envelope design should be of primary importance to every commercial contractor, asserts the Center for Climate and Energy Solutions (CCES). “Space heating, cooling and ventilation,” says the CCES, use up the most energy in commercial sector, and comprise “34% of the energy used onsite.” Net zero energy, the term used in […]

Designing an Energy Efficient Building Envelope

In the early stages of the green building movement, lighting, mechanical, control system designs, and upgrades received the most attention. Over the last several years, however, the focus has shifted towards designing and specifying energy efficient building envelopes. Building construction and operation have an enormous impact on the environment in terms of energy usage, atmospheric […]