We work with builders to model energy-efficiency requirements, conduct air tightness testing and verify plans to meet desired energy performance requirements of a given step of the BC Energy Step Code.
This service enables homeowners to become “energy literate” regarding their homes and the decisions related to them. We provide consulting services to strategize renovation plans to promote better energy performance and occupant comfort.
This service can be offered separately to a builder or renovator to identify air leakage locations, assess airtightness and to aid in the improvement air leakage control practices.
There are attractive rebates and incentives for you to take advantage with the services we provide. We provide assistance through the submission process to ensure maximum savings on your next project.
By utilizing your construction plans or through an onsite assessment, we are able to offer a range of energy modeling services:
A blower door airtightness test effectively measures and identifies where air is leaking through a building's exterior envelope. In a typical home, air leakage can account for 25-40% of the total heat loss of the building. If we increase insulation levels and put in better windows but overlook effectively air sealing the building envelope, the fraction of total heat loss coming from air leakage increases.
We utilize a specially calibrated blower door apparatus with metering equipment that gets installed into a exterior doorway. We measure the amount of air leaving the building envelope at a 50 pascal (Pa) indoor-outdoor pressure difference. This simulates approximately 33 km/h (20 mph) wind blowing on the house equally from all directions. The airflow through the fan and the indoor-outdoor pressure difference provide air tightness values expressed in air changes per hour (ACH), equivalent leakage area (ELA) and normalized leakage area (NLA).
During our air tightness service, we follow a thorough air leakage location identification procedure to locate the weak points in the building envelope and advise on recommendations for repairs and retrofits. We believe in educating and providing positive awareness to builders, homeowners and trades-persons in improving energy efficient building air tightness techniques.
We recommend having a Pre-Drywall Blower Door Test incorporated as a fundamental key part of your planning process. Air leakage can be identified early in the building construction process which will save you time and money. When air leakages are found prior to hanging drywall, there is nothing in the way of finding and fixing every single hole. You can ensure in having an airtight building envelope every time.