Where Should I Insulate?

For the optimum in energy efficiency, a home should be well insulated from top to bottom. At the same time, consideration should be given to controlling air movement, moisture collection, and air leakage. A home is a “building envelope”, and as such, requires a “system” approach that is both comprehensive and all-inclusive. Therefore, where to insulate may be a different issue for every home, depending on the building structure and the energy efficiency priorities.

At Great Northern Insulation, in-house experts can propose an insulation approach that will best suit the need, and deliver the best return-on-investment. This will all depend on the part of the home that will be insulated, as well as the product chosen to do the job.

ATTIC AND ROOF

Whatever the product choice, quality insulation in the attic and roof is vital for energy efficiency. In these spaces, R-Value is important to consider, as well as air sealing and good ventilation. Roof leaks and repairs are also part of the project.

HVAC DUCTWORK

In some cases, it’s necessary to seal and insulate exposed ductwork. This will diminish heat loss, which in itself compromises energy efficiency. Where retrofitting is taking place, it would be wise to place and install ductwork strategically.

CATHEDRAL CEILING

For homeowners with cathedral ceilings, ensuring appropriate insulation and ventilation are of particular importance, mainly because air movement dynamics. Here again, it’s critical to prevent air leakage, and to stop moisture intrusion.

EXTERIOR WALLS

For homes with walls that feel cold in winter and warm in summer, added insulation may be the right course of action. There are various products and methods for completing this retrofit, each with its own benefits and monetary payoffs.

BASEMENT WALLS

Beyond additional living comfort, a well-insulated basement saves measurably on energy costs. With a professional installation, heat loss is reduced, moisture accumulation is diminished, and heating/cooling is better regulated.

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.