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Dense-Pack Cellulose

July 12, 2022

Dense-Pack cellulose insulation blog title photo

Eco-friendly dense pack cellulose insulates brilliantly and lowers your carbon footprint

Looking to make your build more sustainable? Then you're going to want to know more about dense-pack cellulose, an eco-friendly insulation material that's quickly becoming the darling of the sustainable building world. It's increasingly being used for building certifications like NetZero and Passive House because it ticks two very important boxes for green materials:

  1. It's an excellent insulating material, almost as effective as spray foam. It cuts down on energy use and ensures buildings operate at maximum efficiency.
  2. It’s a carbon-negative material: dense-pack cellulose is made of 85% recycled newspaper. So not only does it give an existing material a second life, it started out as a tree that made oxygen and removed carbon from the atmosphere. So even with the processing that's required to create newspapers and convert them into insulation, the end material is still either carbon negative or carbon neutral.

dense-pack cellulose sustainable insulation option

“If reducing your carbon footprint is a key goal, dense-pack cellulose is a fantastic choice,” says Bernie, GNI’s Training and Development Specialist. “Any material that was once a living thing is going to immediately reduce that footprint. Compare it to something made of metal, for example: think of everything it takes to make a metal object. Mining the ore, transporting it, then using a ton of energy to melt it down and form it. A lot less energy goes into creating paper, plus you're starting from a carbon-negative place.”

And there's an additional bonus: dense-pack cellulose is one of the least expensive insulation options. When you're already spending a lot to make a building as eco-friendly as possible (sustainability can be expensive), this is a place where you can save money and get an excellent result.

GNI is Ontario's dense-pack cellulose specialist

This material takes knowledge and skill to install. A technician has to know how to set up the machine correctly, understand how to set the right pressure, be able to sense when the right density has been reached, and properly sequence their work with other trades. As a result, not a lot of installation companies offer this option.

dense-pack cellulose cavity

GNI is focused on making the building industry greener and more environmentally responsible. We focus on using innovative materials – and training our staff to install them for the best results. Two in-house experts travel all over Ontario to help teams learn the nuances of installing the insulation.

Our team will even do research and development for specific builds, constructing model wall assemblies to ensure insulation is installed correctly and they are confident in the solution. We’re building deep expertise across our branches – and offering our customers more and better green/lower carbon options.

Talk to us about your green project.

As a company, our goal is to do everything we can for the ecological future of our planet. If you're thinking about eco-friendly options for your build, give us a call. “We want to have this conversation with anyone who's interested in following an ecological path with their project,” says Bernie. “Even if they don't choose to work with us, I'll be happy if we give them useful guidance – and help the industry get one step closer to a greener future.”

dense-pack cellulose photos

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

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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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