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It's Important to Insulate a Home for the Summer

March 24, 2016

Most homeowners associate home insulation with the wintertime. But in many parts of the country, summer can pose its own challenges when it comes to energy consumption, energy savings, and even home comfort. The thing is, with a super-hot summer, no homeowner wants to be running the air conditioning all the time, and racking up super-high electricity bills. A well insulated home will perform in the summer, just as it does in winter - and the results, whether short term or long term, will be noticeable in terms of energy savings. There's a lot to consider when insulating the home for summer. Air leakage, for instance, is a big issue, and is not usually given enough consideration. As well, poorly sealed doors and windows should be addressed as part of any insulation project. And finally, air circulation and ventilation should be evaluated. For all of these, a comprehensive "energy audit" is the best place to start. Here, an independent assessment will identify the issues that must be resolved, while providing the appropriate recommendations and a viable action plan. One of the critical decisions when deliberating insulation (winter or summer) is what type of insulation to install. This will depend on a number of factors, including the type and extent of insulation that may already exist. And in most cases, the attic and roof cavity will have existing insulation of some description. What's most important is to get a professional evaluation of what to do next. A professional contractor will have the expertise to recommend the best approach for the situation, and the most cost effective installation method. Insulation professionals understand the technical elements of a project. They understand the building code with respect to insulation; they know which product is right for the job; and they can accurately assess how much R-Value is adequate. Best of all, a good contractor will work with a homeowner in deciding how best to meet the budget requirements of the project. It's all about getting the most out of a particular product and providing n installation that will deliver cost savings for heating in winter and cooling in the summer. Summer or winter, there are many homeowners who will want to explore the DIY (do-it-yourself) approach to home insulation. And yes, there are many home centers that sell product, and rent equipment, and even offer advice. But there is little debate about doing a professional job. The professionals have the right tools, equipment and project expertise to do the job right the first time. This is often messy, and even hazardous work - and when there's troubleshooting or unexpected issues, there's nothing like a professional touch. A professional insulation contractor will not just come to install product. There are air leakage concerns to address; there are HVAC (heating and air conditioning) dynamics to consider; and there are ventilation issues that require attention, especially throughout the attic and roof. In short, the comprehensive approach to insulation is the one that delivers the best outcomes from season to season, and for years to come.

Western Ontario

935 Keyes Drive
Woodstock, Ontario
Canada N4V 1C3

Phone: 1-800-265-1914

Fax: (519) 539-7946
TOLL FREE: 1-800-265-1914

Muskoka, Haliburton, Northern Ontario

1027 Elwell Park Road
Gravenhurst, Ontario
Canada P1P 1R1

TOLL FREE: 1-800-265-1914

Central Ontario

29 Ferndale Industrial Drive
Barrie, Ontario
Canada L4N 9V5

TOLL FREE: 1-800-265-1914

Greater Toronto Area

2 Guided Court
Etobicoke, ON
M9V 4K6

TOLL FREE: 1-800-265-1914

GTA East

103 North Port Road
Port Perry, Ontario
Canada L9L 1B2

TOLL FREE: 1-800-265-1914

South Central Ontario

450 Industrial Dr,
Toronto (Milton), Ontario
Canada L9T 5A6

TOLL FREE: 1-800-265-1914

Eastern Ontario

1035 Moodie Dr #1,
Nepean, ON
K2R 1H4

TOLL FREE: 1-800-265-1914

Niagara Region

25 Lincoln Ave
St. Catharines, ON
L2P 2C7

TOLL FREE: 1-800-265-1914


Great Northern Insulation - Better Business Bureau Profile.

Homestars Best of 2021 Award

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.

Homestars Best of 2022 Award

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

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.

100% Canadian

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.

Foam Masters

Do it right the first time
- with foam mastersTM

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.


3MTM products.
Quality + Performance = Savings

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.


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.

As Seen on Love It or List It

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

Climatizer Cellulose


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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