How Can I Tell if My Walls Are Insulated?

For many homeowners, the issue of insulated walls may rarely arise - that is, until there are some problems with poor heating and/or air conditioning. The truth is, in an older home, most people don’t even know what’s behind their walls. So when it’s time to renovate, or undertake some type of home improvement, wall insulation should be integral to the planning. It’s simply a matter of identifying what’s inside the walls, and determining what to do about it.

It’s true that drilling small holes in a wall or checking entry points may reveal the type of existing insulation (even if there is any). But there’s much more to consider: like how much there is, how much coverage exists, and what the R-Value measures. That’s why it’s just simply better to get an expert into the house for a professional evaluation and assessment. It’s also the best way to plan for some retrofitting work and decide to resolve the issue once and for all.

Today, homeowners are very conscious about energy costs. In winter it’s gas for heating, and in summer it’s hydro for air conditioning. There’s no doubt, however, that a properly insulated home is going to be energy efficient and therefore save on energy costs. And while much focus is targeted at attics and basements, walls often get neglected (exterior and interior). In fact, most homes (even newer) don’t have adequate amounts of exterior wall insulation.

At Great Northern Insulation, a unique approach to wall insulation has brought excellent results. It’s a method of retrofitting and upgrading that uses an innovative “drill-and-fill” technique. This approach is effective, especially for exterior walls, where heat loss can be problematic. “Drill-and-fill” installs quality insulation with satisfactory R-Value, prevents unwanted airflow, and stops air leakage into and out of the home. The result: much improved energy efficiency.

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 Can I Tell if My Walls Are Insulated?

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Proudly Serving all of Southern Ontario