For the second year in a row, Owens Corning’s Andy Goyda helped attendees better understand how to deal with – and generate work from – the upcoming changes to the building code. “From here on in every code cycle will see a 15 to 20 percent increase in energy e ciency requirements,” says Goyda. “I’m a firm believer that we will be at net-zero housing before 2030.” With that in mind, a good grounding in building science is very important. Goyda presented a primer on heat flow, moisture flow, and air flow. “Air leakage is a killer. It destroys homes,” says Goyda. “Eliminate air leakage and you’ll get rid of 90% of your construction issues.”
Key Takeaways from Andy’s session:
- Heating accounts for the majority (55%) of energy usage in a typical Canadian house.
- The biggest source of heat loss (30%) is through air leakage and ventilation. “We need to make the homes tighter,” says Goyda.
- Having a continuous air barrier on the exterior of the building significantly reduces the number of potential leakage points.
- 80% of construction litigation is moisture related.
- The soil around a foundation is a heat sink. Reduce energy loss by insulating the slab.
- Owens Corning is developing foam insulation product that you will not have to cover with drywall.