2014 Roundtable Recap

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 hr_2014-10-28_renovatorsroundtable-295_final-largebuilding 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.