How Do I Insulate My Walls?

Unlike today, insulation wasn’t a priority in older residential homes. Building science wasn’t well developed, insulation products were not sophisticated, and energy costs were much lower. If the home was cool in winter, pumping up the heat was no problem. And keeping the air conditioning on all summer was just as okay. There was little thought given to upgrading the insulation.

Today, a well insulated home is critical to creating energy efficiency and managing energy usage. And while most of the focus goes to obvious parts of the house like the attic and basement, other parts of the “building envelope” are neglected – like the walls (especially exterior walls). Truth is, even homes that aren’t so old have exterior walls that are very poorly insulated, if at all.

At Great Northern Insulation, installers have had considerable success with wall insulation using the unique “drill-and-fill” approach. It’s an innovative and highly effective installation for existing walls (both interior or exterior). And since the walls exist, this is a retrofit approach that does the job well - preventing undesirable air movement; stopping air leakage; and insulating all at once.

The “drill-and-fill” approach is the ultimate retrofit. GNI installers strategically drill small holes into a wall, with a focus on the cavities that are located between wall studs. Immediately after, a high quality insulation product (loose fill cellulose) is blown into each of the wall cavities where the holes have been drilled. When the insulation is at maximum, the holes are suitably patched.

For homeowners who find their exterior walls quite cold to the touch, the “drill and fill” retrofit from Great Northern Insulation is the ideal solution. Heating and cooling costs will be noticeably reduced, and the home’s HVAC system (heating and air conditioning) will operate with greater efficiently. Best of all, indoor comfort will be dramatically enhanced throughout the seasons.

Proudly Serving all of Southern Ontario

Great Northern Insulation - Better Business Bureau Profile.

Best of 2021

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

Best of 2022

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

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.

100% Canadian

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

Do it right the first time
- with foam masters^TM

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.

Huntsman HEATLOK® SOYA HFO™

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.

3M^TM products.
Quality + Performance = Savings

3M^TM 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

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.

Enbridge Incentives

The Home Efficiency Rebate Plus program offers up to $10,000 in home reno rebates – and Great Northern Insulation can pave the way.

Great Northern Insulation proudly abides by a renovation-specific Code of Conduct set by RenoMark™.

We are Verified & Bonded by eRenovate. When you choose to proceed with our services through their platform, you receive the gaurantees set forth through their program.

The GNI crew have been featured installing insulation on Love It or List It - have you seen our logo in an episode?

Climatizer

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.

How Do I Insulate My Walls?

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Proudly Serving all of Southern Ontario