Building enveloped that perform poorly reduce energy efficiency, increase ROI times, and increase carbon footprints and utility bills for building owners. A blower door test can help to establish the airtightness of small to medium buildings, measure the flow of air between different areas in a building and test the airtightness of ductwork.
An effective building envelope is a combination of insulating building materials and a reduction in air leakage. This reduction can be achieved by using taller wall sheathing panels and through effectively sealing air leaks. When determining which air leaks construction professionals should focus on, Dave Wolf from Owens Corning Science and Technology has conducted a study to see which leaks require the least effort and sealant and provide the highest returns in building envelope efficiency.
Energy efficient home design relies on effective building envelopes and as these get tighter, some concerns are being raised about poor indoor air quality. This has led many construction professionals to add mechanical ventilation to their designs.
An energy audit is a series of tests run to determine the efficiency with which your building utilizes energy. Whether you are planning a renovation to reduce energy consumption, or have just completed a new build, energy audits establish the efficiency level of your building envelope. Energy audits help to show where you can get the most savings for your building buck and what improvements will give you the best return on investment.