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Agricultural Insulation


A History of Ontario Excellence

When it comes to new barn builds, milking parlour installations, or existing building retrofits, Great Northern Insulation are the experts in assessing and addressing the need for insulation on the farm. Canadian owned and operated for over 38 years, Great Northern Insulation is Ontario’s insulation provider of choice. We are proud to offer a huge variety of insulation products and installation services, including products that are Zero ODP or EcoLogo certified, for peace of mind when it comes to installing products that utilize no ozone-depleting blowing agents, a guaranteed percentage of recycled content, or meet the rigorous requirements for the Greenguard Children & Schools certification to ensure indoor occupant safety through improved air quality. 

A Solution for Every Farm

Great Northern Insulation's most commonly encountered agricultural buildings include dairy, hog, goat, swine, and chicken barns, as well as stables, sheds, barn offices, and manure enclosures. Improved insulation in any agricultural building can help prevent crop spoilage, increase the lifespan on farm equipment and machinery, reduce structural deterioration, prevent freezing, control moisture spread, humidity levels, and overall temperature.

Improved insulation can also affect the overall health and well-being of livestock by controlling humidity and temperature to reduce heat stress, prevent mold growth, and provide a moisture and vapour barrier while encouraging proper ventilation. 

For most modern builds, Great Northern Insulation recommends a spray polyurethane foam as the preferred insulation product. Thanks to its spray-in-place application, spray foam is able to be used in practically any scenario, from barn office walls for insulation and air sealing, to outdoor manure pit walls to prevent freezing. Some of the benefits of spray foam insulation include:

  • One of the highest R-values per square inch.
  • Provides an air and vapour barrier to the entire surface.
  • Adds structural strength to the installation area.
  • Does not absorb water or moisture and prevents condensation.
  • Does not attract or encourage vermin to nest.
  • Can be applied to nearly any application space, regardless of size or shape.


Don't see your issue listed here? Book a free no-obligation, on-farm assessment by clicking here or calling 1-800-265-1914.



Agricultural-Specific Insulation Benefits

  • Heat Stress Prevention

Better insulation in your barns means less heat stress for livestock due to a more controlled temperature indoors.

  • Certified Safe and Environmentally Friendly

EcoLogo and Greenguard-certified products are available for peace of mind when it comes to air quality and recycled content within your buildings.

  • Condensation Prevention

Prevent condensation on interior walls or ceilings to reduce humidity and building deterioration, as well as prevent mould growth.

  • Air and Vapour Barrier

Certain types of insulation, especially spray foam, provide an air and vapour barrier on their own and do not require a separate barrier to be installed.

  • Vermin Resistance

Unlike other insulative materials, spray foam prevents vermin from nesting. No barn cat required!

  • Prevent Freezing

Improved insulation prevents freezing on dairy or glycol lines, as well as other freezing-prone areas on the farm such as manure tracks or pit walls.

  • Add Fire Resistance

GNI specializes in adding fire resistance wherever possible, mitigating risk and reducing flame spread.


Book a free no-obligation, on-farm assessment by clicking here, or calling 1-800-265-1914.


Coming soon

Client Feedback

GNI took care of everything I needed to have a more comfortable, energy-efficient home


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Very professional and courteous. Greeted with a hand shake which is something that doesn’t happen all too often.


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Wow, just wow. First experience with Great Northern and I was and remain impressed with the experience


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GNI took care of arranging the energy audit beforehand so we could get a rebate on the work. The installers were quick, polite, and cleaned up after themselves!


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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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