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Great Northern Insulation Insulates Home with an Air-Tightness that Exceeds Net Zero Requirements Using BASF's HP+ Wall System

June 19, 2019

Woodstock, ON, June 19, 2019 - The HP+ TM Wall System, created by BASF and installed by Great Northern Insulation (GNI), was used to construct a net zero energy (NZE) home in North Bay, Ontario. The NZE home passed an airtightness test with 0.77 air changes per hour (ACH), which is 0.83 ACH less than required to meet NZE certification for a single, detached home. Homeowners, John Halliday and Catherine Ella, had direct involvement in the design and development of their home.

Halliday, a native of North Bay, was determined to construct a NZE home. The BASF HP+ Wall System, is gaining popularity with homebuilders across Canada, and has now been used in two NZE ready builds in Ontario.

“Actually, I had met a BASF construction specialist, who also happened to be from North Bay, at a net zero builder’s course,” said Halliday. “The combination of Neopor® rigid insulation, WALLTITE® spray foam insulation, and the unique 2x4 framing of the HP+ XR Series wall system, is designed to significantly reduce thermal bridging and increase wall performance.  It is really suited to the type of climate we have here in northern Ontario. I believe this wall system was very instrumental in providing a very tight, and draft free home.”

According to Halliday, the home has surpassed his expectations by being the most quiet, comfortable, draft-free and evenly heated and cooled home he has lived in. Halliday expects the features of BASF’s HP+ Wall System to become mandatory elements of future building codes.

“We’ve been working very closely with Great Northern Insulation to bring awareness of the BASF HP+ Wall System to builders,” said Kevin Nagle, Residential Construction Specialist for BASF Canada in Ontario. “Building codes are becoming increasingly more stringent in terms of energy efficiency, and a net zero home offers a significant increase in energy efficiency performance, especially when thermal bridging is minimized, and air tightness is maximized using a tested system like the BASF HP+ Wall System XR Series. This is our opportunity to improve the building industry as a whole.”

“If I could shout from a rooftop at everyone to use the BASF HP+ wall system, I would,” said Steve Reesor, President of GNI. “Existing building stock represents 17 per cent of Canada’s greenhouse gas emissions. We desperately need to lower this number through innovative new products and available rebates. When it comes down to it, it doesn’t matter how you achieve net zero, it just needs to be done.”

To find out more about how Great Northern Insulation and the HP+ XR Series wall system, please visit https://www.gni.ca/basf-hp-wall-systems.

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HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2021.

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HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2022.


GNI is the Authorized & Trusted Insulation and Air Sealing Installer for Lowe’s

Trusted for Over 40 Years

Over 40 Years in Business

At GNI, we service your project with the most experienced staff in the industry. Ongoing professional development is an obsession at GNI and we will not compromise at any level to bring to our customers the very best Installers, Sales Representatives, Customer Care Personnel, Field Superintendents, Estimating and Technical Support to your project.

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Great Northern Insulation is recognized as Canada's largest full-service insulation contractor. GNI is 100% Canadian owned, proudly serving Ontario customers since 1980.

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January, 2021 regulatory phaseout of hydrofluorocarbons (HFCs) with the introduction of WALLTITE CM01. Using hydrofluorolefins (HFOs) with lower global warming potential (GWP) compared to HFCs, WALLTITE CM01 is the next generation of spray foam insulation.



Heatlok® Soya HFOTM leverages Honeywell’s latest Solstice® Liquid Blowing Agent technology. This new hydrofluoroolefin (HFO) blowing agent is the most environmentally conscious blowing agent produced to date, with a zero ozone depletion potential (ODP) and a global warming potential (GWP) of 1, which is more than two orders of magnitude (99.9%) lower than HFCs used in this industry.


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3MTM energy-saving products are designed to keep warm air in, and cold air out, while keeping energy bills down. Products optimize energy efficiency in buildings and homes; improve indoor environment for occupants; and effect the reduction of seasonal energy costs. 3M products are authorized for LEED credits (Leadership in Energy/Environmental Design).

Holmes and Holmes

Holmes and Holmes


Mike Holmes and his son Mike Jr. (MJ) convert MJ’s bachelor bungalow into a two-storey home for MJ and his girlfriend Lisa. Choosing the newest materials and build techniques, the father and son team follow Mike’s famous motto – “Make it right.” The show can be watched on HGTV and DIY Network.


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CLIMATIZER PLUS cellulose insulation is manufactured from a minimum of 85% locally-sourced post-consumer recycled newsprint. Non-toxic additives are applied to the uniquely fiberized paper generating a building material with superior thermal and acoustic properties, as well as exceptional resistance to fire, moisture, mould and pests.

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